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Lakeshore 620 User Manual

Manual is about: Magnet Power Supply

Summary of 620

  • Page 1

    Rev. 1.2 p/n 119-001 9 april 1999 power fault persistent switch heater magnet p ower suppl y 7 local esc 9 8 7 local esc 9 8 4 remote 6 5 1 3 2 0 enter +/- . Function menu next menu normal display cursor data entry functions mode output inhibit model 620 – ±50 a, ±5 v model 623 – ±155 a, ±30 v model...

  • Page 2

    Lake shore model 620/622/623/647 magnet power supply user’s manual a limited warranty lake shore cryotronics, inc. (henceforth lake shore), the manufacturer, warrants the instrument to be free from defects in material and workmanship for a period of twelve months from the date of shipment. During th...

  • Page 3

    Lake shore model 620/622/623/647 magnet power supply user’s manual table of contents i table of contents chapter/paragraph title page list of illustrations ......................................................................................................................................Iv list of...

  • Page 4

    Lake shore model 620/622/623/647 magnet power supply user’s manual ii table of contents table of contents (continued) chapter/paragraph title page 3.3 normal display for manual mode ........................................................................................... 3-2 3.4 normal display for...

  • Page 5

    Lake shore model 620/622/623/647 magnet power supply user’s manual table of contents iii table of contents (continued) chapter/paragraph title page 5 error messages and troubleshooting ...............................................................................5-1 5.0 general .......................

  • Page 6: List of Illustrations

    Lake shore model 620/622/623/647 magnet power supply user’s manual iv table of contents list of illustrations figure no. Title page 1-1 four-quadrant power ...................................................................................................................... 1-4 1-2 comparison of old...

  • Page 7: Foreword

    Lake shore model 620/622/623/647 magnet power supply user’s manual forward v foreword purpose and scope this manual contains user instructions for the model 620/622/623/647 magnet power supply (mps). Lake shore cryotronics, inc. Designed, manufactures, and assembles the mps in the united states of a...

  • Page 8

    Lake shore model 620/622/623/647 magnet power supply user’s manual forward vi identification of electrostatic discharge sensitive components below are various industry symbols used to label components as esds: handling electrostatic discharge sensitive components observe all precautions necessary to...

  • Page 9

    Lake shore model 620/622/623/647 magnet power supply user’s manual forward vii before you operate the equipment train personnel in proper emergency measures such as electrical power shut off, fire department notification, fire extinguishing, and personnel and records evacuation. Here is a list of su...

  • Page 10

    Lake shore model 620/622/623/647 magnet power supply user’s manual forward viii safety symbols direct current (power line). Alternating current (power line). Alternating or direct current (power line). Three-phase alternating current (power line). Earth (ground) terminal. Protective conductor termin...

  • Page 11: Chapter 1

    Lake shore model 620/622/623/647 magnet power supply user’s manual introduction 1-1 chapter 1 introduction 1.0 general this chapter covers features (paragraph 1.1), specifications (paragraph 1.2), and operating characteristics (paragraph 1.3). 1.1 features • true, four-quadrant bidirectional power f...

  • Page 12

    Lake shore model 620/622/623/647 magnet power supply user’s manual introduction 1-2 1.2 specifications below are performance specifications for current with a 1 henry load and voltage with a resistive load. Dc output: true, four-quadrant, bidirectional power flow output. Autoranging current and volt...

  • Page 13

    Lake shore model 620/622/623/647 magnet power supply user’s manual introduction 1-3 front panel: contains a menu driven keyboard and graphic display for entry and display of results. Operating parameters to set and monitor from the front panel (and remote interface) include: • output current and com...

  • Page 14

    Lake shore model 620/622/623/647 magnet power supply user’s manual introduction 1-4 table 1-4. Model 647 dc output specifications specification current voltage digital programming resolution: standard/high 10 ma / 1 ma 10 mv / 1 mv digital programming accuracy 0.1% i max 1% v max digital programming...

  • Page 15

    Lake shore model 620/622/623/647 magnet power supply user’s manual introduction 1-5 conventional mps: consists of a unipolar power supply with an energy absorber to dissipate magnet energy during discharge. The energy absorber prevents reverse voltage generated during the discharge from damaging the...

  • Page 16

    Lake shore model 620/622/623/647 magnet power supply user’s manual introduction 1-6 1.3.3 highly efficient, air cooled, compact unit lake shore mps: quiet switched-mode design. The output uses a proprietary pulse width modulated technique that incorporates power hybrid circuitry. Extremely low condu...

  • Page 17: Chapter 2

    Lake shore model 620/622/623/647 magnet power supply user’s manual setup & connections 2-1 chapter 2 initial setup and connections 2.1 inspecting and unpacking the mps ships in a special cardboard box with integrated forklift skid openings. Do not stack anything on top of the mps box. Upon receipt, ...

  • Page 18

    Lake shore model 620/622/623/647 magnet power supply user’s manual setup & connections 2-2 2.4.1 power and ground requirements the ac power source for the mps should be frequency and voltage regulated and isolated from sources that may generate electromagnetic interference (emi). The mps is designed...

  • Page 19

    Lake shore model 620/622/623/647 magnet power supply user’s manual setup & connections 2-3 use this procedure to connect input power to the mps: 1. Loosen the two connector cover screws and open the cover. 2. Slip the strain relief over the power cable with the flanged end at the end to be terminate...

  • Page 20

    Lake shore model 620/622/623/647 magnet power supply user’s manual setup & connections 2-4 2.5.2 shielding, grounding, and noise for noise reduction, tightly twist and shield the leads from the mps to the magnet. Connect the shield to the mps chassis as shown in figure 2-3. Warning: do not place mag...

  • Page 21

    Lake shore model 620/622/623/647 magnet power supply user’s manual setup & connections 2-5 2.5.6 mps analog current and voltage monitoring connections the mps provides amplified and buffered current and voltage monitor output signals at the terminal block on the back panel. Connect these signals to ...

  • Page 22

    Lake shore model 620/622/623/647 magnet power supply user’s manual setup & connections 2-6 note: the mps includes a protection circuit which reduces the effect of open sense leads during remote voltage sensing operation. If the +s lead opens, the output voltage changes because it is sensed between +...

  • Page 23

    Lake shore model 620/622/623/647 magnet power supply user’s manual setup & connections 2-7 c. Locate communications microprocessor (cmp) in the mps rear panel. The cmp is the module with two rj-11 telephone jacks. Loosen two screws securing cmp to mps rear panel and slide cmp out. Just inside the cm...

  • Page 24

    Lake shore model 620/622/623/647 magnet power supply user’s manual setup & connections 2-8 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 + - + - + - ovp im vm m vp +vs -ls lp +ls -s +s cal and id v l mode int v l ext ri flt on warning: no user serviceable parts inside. Refer servicing to trained serv...

  • Page 25

    Lake shore model 620/622/623/647 magnet power supply user’s manual setup & connections 2-9 2.7 post-installation instructions the mps is electrically and mechanically inspected and operationally tested prior to shipment. It should be damage-free and in perfect working order upon receipt. To confirm ...

  • Page 26

    Lake shore model 620/622/623/647 magnet power supply user’s manual setup & connections 2-10 this page intentionally left blank.

  • Page 27: Chapter 3

    Lake shore model 620/622/623/647 magnet power supply user’s manual operation 3-1 chapter 3 operation 3.0 general this chapter covers seven areas: mps front panel (paragraph 3.1), power up (paragraph 3.2), setting current on an mps with manual psh control (paragraph 3.3), setting current with automat...

  • Page 28

    Lake shore model 620/622/623/647 magnet power supply user’s manual operation 3-2 3.2 power up read and follow instructions in paragraphs 2.1 - 2.4.3 and the forward safety recommendations before applying power to the mps. Do not connect the mps to the magnet yet. Short the output terminals together ...

  • Page 29

    Lake shore model 620/622/623/647 magnet power supply user’s manual operation 3-3 the magnet manufacturer supplies the inductance of the magnet, maximum ramp voltage, and maximum current ramp rate. The relationship for these parameters is given by the equation: v l di dt max ≥ where: v max = rated ma...

  • Page 30

    Lake shore model 620/622/623/647 magnet power supply user’s manual operation 3-4 mgt end: 0 to ±50.000 a (620), 0 to ±125.000 a (622), 0 to ±155.000 a (623), 0 to ±72.000 a (647) magnet end current. The desired magnet current. To set a new current, move to the mgt end line and enter a new current, t...

  • Page 31

    Lake shore model 620/622/623/647 magnet power supply user’s manual operation 3-5 3.6 function menus the mps uses a system of three function menus for setup. Function menus 1 and 2 do not require a psh option card, but the presence of one changes the look of the menus. The function menu 3 requires a ...

  • Page 32

    Lake shore model 620/622/623/647 magnet power supply user’s manual operation 3-6 3.6.1.3 step limit/zero screen press the function menu key to display function menu 1. Press the step limit/zero function key to display the step limit/zero screen to the right. This screen combines two features: curren...

  • Page 33

    Lake shore model 620/622/623/647 magnet power supply user’s manual operation 3-7 i max set: 0.00 a to +50.00 a (620), +125.00 a (622), +155.00 a (623), or +72.00 a (647) current maximum setting. Mps current cannot exceed this setting. The software allows no setting above these limits. The rated maxi...

  • Page 34

    Lake shore model 620/622/623/647 magnet power supply user’s manual operation 3-8 3.6.2.1 outputs only screen press the output only function key to display a screen with output values in larger characters for remote viewing. There are two screens: one with the lhe level/field option, one without the ...

  • Page 35

    Lake shore model 620/622/623/647 magnet power supply user’s manual operation 3-9 3.6.3.2 delay setup screen with dithering to access the dithering feature, turn on (up position) switch 5 of the rear panel cal and id dip switches. Select delay/dither from function menu 3 to display the automatic mode...

  • Page 36

    Lake shore model 620/622/623/647 magnet power supply user’s manual operation 3-10 2. Enter these parameters in the automatic mode screen: mag start: magnet start current (only if last end is unknown). For this example, we assume an initial mps hook-up to this magnet and a previous magnet charge to 2...

  • Page 37

    Lake shore model 620/622/623/647 magnet power supply user’s manual operation 3-11 3.9 dithering in automatic mode dithering is a means of arriving at the magnet current by executing excursions around the final current which decay to zero in a specified dwell (delay) time. For example, suppose the fi...

  • Page 38

    Lake shore model 620/622/623/647 magnet power supply user’s manual operation 3-12 this page intentionally left blank..

  • Page 39: Chapter 4

    Lake shore model 620/622/623/647 magnet power supply user’s manual remote operation 4-1 chapter 4 remote operation 4.0. General either of two computer interfaces on the optional 6224 card permit remote mps operation: the ieee-488 interface (paragraph 4.1) and the serial interface (paragraph 4.2). Us...

  • Page 40

    Lake shore model 620/622/623/647 magnet power supply user’s manual remote operation 4-2 4.1.2 ieee-488 command structure the model 622/623 supports several command types. There are three groups of commands: 1. Bus control – see paragraph 4.1.2.1. A. Universal (1) uniline (2) multiline b. Addressed b...

  • Page 41

    Lake shore model 620/622/623/647 magnet power supply user’s manual remote operation 4-3 4.1.3.1 status byte and service request enable registers the status byte register consists of a single data byte containing seven bits of mps status information. Status byte register format 7 6 5 4 3 2 1 0 bit 12...

  • Page 42

    Lake shore model 620/622/623/647 magnet power supply user’s manual remote operation 4-4 the standard event status enable register enables any of the standard event status register reports. The standard event status enable command (*ese) sets the standard event status enable register bits. Set a bit ...

  • Page 43

    Lake shore model 620/622/623/647 magnet power supply user’s manual remote operation 4-5 4.1.5 notes on using the ieee interface • the term "free field" indicates a floating decimal point that may be placed any appropriate place in the string of digits. • [term] indicates where the user places termin...

  • Page 44

    Lake shore model 620/622/623/647 magnet power supply user’s manual remote operation 4-6 national instruments gpib0 configuration gpib-pc2/2a ver 2.1 primary gpib address .................. → 0 ↑ select the primary gpib address by secondary gpib address .............None using the left and right arro...

  • Page 45

    Lake shore model 620/622/623/647 magnet power supply user’s manual remote operation 4-7 4.2 serial i/o interface rs-232c is a standard of the electronics industries association (eia) and one of the most common interfaces between a computer and electronic equipment. The customer supplied computer mus...

  • Page 46

    Lake shore model 620/622/623/647 magnet power supply user’s manual remote operation 4-8 4.2.1 serial interface hardware configuration below is a technical description of the 6224 option card for the serial interface configuration. (note: see appendix c for serial interface on cmp.) table 4.2 defines...

  • Page 47

    Lake shore model 620/622/623/647 magnet power supply user’s manual remote operation 4-9 4.2.4 notes on using the serial interface • to chain commands together, insert a semi-colon (;) between them. Multiple queries cannot be chained. • queries use the same syntax as the associated setting command fo...

  • Page 48

    Lake shore model 620/622/623/647 magnet power supply user’s manual remote operation 4-10 4.3 summary of ieee-488/serial interface commands below is an alphabetical list of ieee-488/serial interface commands consisting of operational commands (paragraph 4.3.1), interface commands (paragraph 4.3.2), r...

  • Page 49

    Lake shore model 620/622/623/647 magnet power supply user’s manual remote operation 4-11 4.3.1 operational commands description below is a list of mps operational commands which configure the various functions. Err? Error status query input: err? Returned: [ovp] [ri] [step] remarks: returns 0 if the...

  • Page 50

    Lake shore model 620/622/623/647 magnet power supply user’s manual remote operation 4-12 ovp? Overvoltage (quench) protection circuit status query input: ovp? Returned: 0 if the circuit is inactive, or 1 if it is active. Remarks: one character plus up to two terminators are returned. Res? Resolution...

  • Page 51

    Lake shore model 620/622/623/647 magnet power supply user’s manual remote operation 4-13 4.3.2 interface commands description the mps interface commands below help configure ieee-488 interface compatibility for a variety of computer equipment. End programs mps interface eoi (end or identify) status ...

  • Page 52

    Lake shore model 620/622/623/647 magnet power supply user’s manual remote operation 4-14 4.3.3 ramping commands description the following mps ramping commands configure the various functions of the ramping features. Ramp programs ramp segment parameters input: ramp[segment],[initial ramp current],[f...

  • Page 53

    Lake shore model 620/622/623/647 magnet power supply user’s manual remote operation 4-15 4.3.4 current zero commands description the following mps commands configure the various functions of the current zero features. Imode? Current programming mode query input: imode? Returned: 0 if i mode switch i...

  • Page 54

    Lake shore model 620/622/623/647 magnet power supply user’s manual remote operation 4-16 4.3.5 current step limit commands description the following mps commands configure the various functions of the current step limit features. Istp programs output current step limit input: istp [step limit] where...

  • Page 55

    Lake shore model 620/622/623/647 magnet power supply user’s manual remote operation 4-17 4.3.6 computed field commands description the mps can also display computed field rather than current. This is useful with superconducting magnets because there is a linear relationship between the current and a...

  • Page 56

    Lake shore model 620/622/623/647 magnet power supply user’s manual remote operation 4-18 4.3.7 common commands description the mps common commands below are input/output commands defined by the ieee-488 standard and shared with other instruments complying with the standard. Common commands begin wit...

  • Page 57

    Lake shore model 620/622/623/647 magnet power supply user’s manual remote operation 4-19 *idn? Identification query input: *idn? Returned: manufacturer, model number, model serial number, firmware date. Remarks: returns seventeen characters plus up to two terminators. Example: lsci,622,0,120193[term...

  • Page 58

    Lake shore model 620/622/623/647 magnet power supply user’s manual remote operation 4-20 * sre enables status reports in the service request enable register input: *sre [bit weighting] where [bit weighting] = the sum (000 to 255) of bit weighting of each bit to be set. See the discussion on register...

  • Page 59: Chapter 5

    Lake shore model 620/622/623/647 magnet power supply user’s manual error messages & troubleshooting 5-1 chapter 5 error messages and troubleshooting 5.0 general this chapter covers software error messages (paragraph 5.1), factory default settings (para- graph 5.2), calibration procedure (paragraph 5...

  • Page 60

    Lake shore model 620/622/623/647 magnet power supply user’s manual error messages & troubleshooting 5-2 no delay is allowed (cal and id switch 7 off, down) and multiple mps operation (cal and id switch 4 on, up) must be selected. After the load discharges, turn off all units to reset. The mps displa...

  • Page 61

    Lake shore model 620/622/623/647 magnet power supply user’s manual error messages & troubleshooting 5-3 high ac (hi ac) detected any time the ac line rises above 120% of the nominal line selected, the mps turns off the front panel circuit breaker and enters ac loss mode. This halts excessive utility...

  • Page 62

    Lake shore model 620/622/623/647 magnet power supply user’s manual error messages & troubleshooting 5-4 5.2 factory default settings below is a list of factory-presets. To reinitialize the mps to factory presets at any time, hold the esc key for about 15 seconds. Note: if the mps is part of a superc...

  • Page 63

    Lake shore model 620/622/623/647 magnet power supply user’s manual error messages & troubleshooting 5-5 5.3 calibration note: calibration is only as accurate as the current monitor shunt. The factory uses a current monitor shunt rated at 0.02% accuracy. Shunt manufacturers typically stock accuracy v...

  • Page 64

    Lake shore model 620/622/623/647 magnet power supply user’s manual 5-6 error messages & troubleshooting 17. Send izer to force output current to 0 amps. Verify a dvm reading of 0v ±0.01v. Allow mps output to settle for 2 minutes. 18. Convert dvm voltage reading to current. A reading of +0.000345v eq...

  • Page 65

    Lake shore model 620/622/623/647 magnet power supply user’s manual error messages & troubleshooting 5-7 output voltage verification 5. From the mps front panel, select the instrument setup (instr. Setup) menu and change compliance voltage to 5 v. Press the normal display key to return to the normal ...

  • Page 66

    Lake shore model 620/622/623/647 magnet power supply user’s manual 5-8 error messages & troubleshooting 5.5 rear panel connector detail figure 5-1 mps rear panel connectors 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 + - + - + - ovp im vm m vp +vs -ls lp +ls -s +s cal and id v l mode int v l ext ri...

  • Page 67

    Lake shore model 620/622/623/647 magnet power supply user’s manual error messages & troubleshooting 5-9 5.6 ieee-488 interface connector (when model 6224 option is present) connect to rear mps ieee-488 interface connector with cables specified in the ieee-488-1978 standard document. The cable has 24...

  • Page 68

    Lake shore model 620/622/623/647 magnet power supply user’s manual 5-10 error messages & troubleshooting 5.7 serial interface cable and adapters to aid in serial interface troubleshooting, the figures below provide wiring information for the cable assembly and the two mating adapters. Black red gree...

  • Page 69: Chapter 6

    Lake shore model 620/622/623/647 magnet power supply user’s manual options & accessories 6-1 chapter 6 options and accessories 6.0 general this chapter covers mps options and accessories: model 6224 ieee-488/serial interface installation (paragraph 6.1), model 6226/6476 liquid helium level and gauss...

  • Page 70

    Lake shore model 620/622/623/647 magnet power supply user’s manual options & accessories 6-2 below are specifications for the model 6226/6476 liquid helium level and gaussmeter input card: liquid helium level: probe type: nbti superconducting filament sample period: fixed at 5 seconds number of inpu...

  • Page 71

    Lake shore model 620/622/623/647 magnet power supply user’s manual options & accessories 6-3 locate the probe in a cavity that is 0.003 inch wider and 0.01 inch longer than the substrate, and with a depth the same or slightly greater than the thickness of the package. Tack the leads outside the slot...

  • Page 72

    Lake shore model 620/622/623/647 magnet power supply user’s manual options & accessories 6-4 6.2.5 lhe level access liquid helium level and field monitoring from the mps front panel. Press function menu and then next menu to display function menu 2. If the model 6226/6476 option is not present, appe...

  • Page 73

    Lake shore model 620/622/623/647 magnet power supply user’s manual options & accessories 6-5 6.2.5.2 field probe setting and calibration press function menu and then next menu to display function menu 2. Press the field function key to display the field screen to the right. Field probe setting: unit...

  • Page 74

    Lake shore model 620/622/623/647 magnet power supply user’s manual options & accessories 6-6 look up the r ref /r (t) in table 6-2 at the temperature of the sensor during measurement. Use the equation: Ω l effective r l r r t active ref t f hg i kj = × l n mm o q pp b g b g where l active is the sen...

  • Page 75

    Lake shore model 620/622/623/647 magnet power supply user’s manual options & accessories 6-7 ibs? Magnetic field summary query input: ibs? Returned: [iout], [bfld], [stb] remarks: returns 23 characters plus up to two terminators. Lalm program level alarm input: lalm [alarm] where [alarm] is the leve...

  • Page 76

    Lake shore model 620/622/623/647 magnet power supply user’s manual options & accessories 6-8 luni? Lhe level units query input: luni? Returned: % for percentage, e for english units (inches), or m for metric units (centimeters) remarks: returns one character plus up to two terminators are returned. ...

  • Page 77

    Lake shore model 620/622/623/647 magnet power supply user’s manual options & accessories 6-9 6.3 model 6228 and 6228-8mux persistent switch heater output the model 6228 persistent switch heater (psh) output option provides a variable 0-124 ma dc output in 4 ma increments. The output compliance is an...

  • Page 78

    Lake shore model 620/622/623/647 magnet power supply user’s manual options & accessories 6-10 when psh is on, the mps compares the present current setting with the current setting stored when psh was off. If the two do not match, the mps sounds the alarm for ½ second and displays: press a data entry...

  • Page 79

    Lake shore model 620/622/623/647 magnet power supply user’s manual options & accessories 6-11 3. The selected current multiplied by the heater resistance (e = i × r) must be less than 15 vdc for the mps to accurately determine compliance of the switch heater (open resistance). Examples: a 100 ohm he...

  • Page 80

    Lake shore model 620/622/623/647 magnet power supply user’s manual options & accessories 6-12 pshs? Psh summary query input: pshs? Returned: [psh][psh status][psh compliance][current value][command status] where: [psh] = 0 if psh is present, or 1 if psh is not present, [psh heater status] = 0 if hea...

  • Page 81

    Lake shore model 620/622/623/647 magnet power supply user’s manual options & accessories 6-13 6.4.1 model 6228-2 remote operation commands ipshb program psh current input: ipshb [current] where [current] = a value from 0 to 125 ma remarks: the initial condition is 0 ma. Current can be set from 0 to ...

  • Page 82

    Lake shore model 620/622/623/647 magnet power supply user’s manual options & accessories 6-14 6.5 accessories accessories are devices that perform a secondary duty as an aid or refinement to the primary unit. Below are mps accessories. Model number description of accessory 106-720 terminal block mat...

  • Page 83: Appendix A

    Lake shore model 620/622/623/647 magnet power supply user’s manual magnetic units a-1 appendix a units for magnetic properties conversion from cgs to si units quantity symbol gaussian & cgs emu a conversion factor, c b si & rationalized mks c magnetic flux density, magnetic induction b gauss (g) d 1...

  • Page 84

    Lake shore model 620/622/623/647 magnet power supply user’s manual magnetic units a-2 this page intentionally left blank.

  • Page 85: Appendix B

    Lake shore model 620/622/623/647 magnet power supply user’s manual mainframe control bus operation b-1 appendix b mainframe control bus operation b1.0 general there are seven elements to the model 622/623 mainframe control bus operating instructions: control bus serial interface specifications (para...

  • Page 86

    Lake shore model 620/622/623/647 magnet power supply user’s manual mainframe control bus operation b-2 b4.0 control bus serial interface configuration configure the control bus serial interface for either rs-232c or rs-485 communications with dip switches on the communications processor board (cmp)....

  • Page 87

    Lake shore model 620/622/623/647 magnet power supply user’s manual mainframe control bus operation b-3 b6.0 control bus serial interface operation the host computer initiates the serial interface link and transmits either a command or a query to the mainframe. The mainframe stores the characters in ...

  • Page 88

    Lake shore model 620/622/623/647 magnet power supply user’s manual mainframe control bus operation b-4 b7.0 control bus serial interface sample program the following pc program is an interactive program that prompts the user for a mainframe command and displays the mainframe response. The command mu...

  • Page 89

    Lake shore model 620/622/623/647 magnet power supply user’s manual mainframe control bus operation b-5 table b-1 mps mainframe control bus remote command summary input command query function *cls – clear all pending status. *ese *ese? Event status register enable. – *esr? Event status register conte...

  • Page 90

    Lake shore model 620/622/623/647 magnet power supply user’s manual mainframe control bus operation b-6 table b-2 additional mps mainframe control bus remote commands input command query function – adr mainframe address. Multidrop address 0-32 available. Commands sent must have the address as the fir...