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Canary MultiMux User Manual

Summary of MultiMux

  • Page 1

    Multimux multiplexer user ’ s guide disclaimer: the following document is provided to assist users with the installation, operation and training in the use of our products. This document and our products are intended to be used by technically qualified personnel. Contained herein is information that...

  • Page 2

    Table of contents section 1 introduction 1.1 overview........................................................................................ 3 1.2 specifications................................................................................. 4 section 2 multimux operation and installation 2.1 oper...

  • Page 3

    Section 1 - introduction 3 1.1 overview the multimux expands the number of instruments that may be read by the cr10 or cr10x in increments of 16, 32 or 48, depending on the model purchased and the type of sensor being read. In addition the multimux provides integral lightning protection by utilizing...

  • Page 4

    Section 1 - introduction 4 time current 10% 90% 100% 0% 10ms 1000ms 50% surge waveform 1.2 specifications general power requirements: 9-16 vdc (unregulated) quiescent current: 100 µ a channel activated current (2 or 4-wire): 40 ma channel activated current (6-wire): 50 ma control line input impedanc...

  • Page 5

    Section 2 – multimux operation and installation 5 2.1 operation details the multimux is controlled by the cr10 or cr10x controller using 2 digital control signals. The operation of the multimux is simple enough so that virtually any device capable of controlling 2 digital ttl/cmos type signals can b...

  • Page 6

    Section 2 – multimux operation and installation 6 2.2 datalogger connection the multimux is connected to the cr10/cr10x controller or multilogger mux terminal board (or ml mux tb) using the screw terminals on the terminal board. The screw terminal block located on the bottom of the terminal board ha...

  • Page 7

    Section 2 – multimux operation and installation 7 2.3 instrument connection the way instruments are connected to the multimux will vary slightly depending on the mode selection (section 2.1). The following table illustrates typical connection techniques for each of the operating modes. Mode descript...

  • Page 8

    Section 2 – multimux operation and installation 8 2.5 cr10/cr10x program example the following example illustrates how to write custom programs for the cr10/cr10x to read instruments connected to the multimux. The example assumes a 16 channel mode multimux reading 16 vibrating wire gages and their r...

  • Page 9

    Section 2 – multimux operation and installation 9 2.6 cr1000 program example 'enable our multiplexer portset (1,1) 'wait 100msec for multiplexer to power up delay(0,100,msec) 'cycle through 16 channels for channel = 1 to 16 'set clock port high to advance mux channel portset(8,1) 'wait 10msec for 50...

  • Page 10

    Section 2 – multimux operation and installation 10 serialout (com3,"p0400 3500 0600 0040 0300"+chr(13),"",0,0) 'short delay delay (0,200,msec) 'clear buffer serialflush(com3) 'send va measurement command serialout (com3,"va"+chr(13),"",0,0) 'configure serial input for receiving response serialin(sin...

  • Page 11

    Section 2 – multimux operation and installation 11 2.8 enclosure installation the standard enclosure for the multimux is a hoffman 12x10 fiberglass/polyester nema 4 type. The enclosure can be mounted to a wall or other surface by attaching the 4 supplied mounting tabs to the bottom of the enclosure ...

  • Page 12

    Section 2 – multimux operation and installation 12 2.10 daisymux operation daisymux is a special operation mode where all of the signals are shared between 2 or more multiplexers. The multimux supports up to 8 multiplexers used in a daisymux configuration and the switching mode is always 16 channel....

  • Page 14

    Section 3 – troubleshooting 14 3.1 troubleshooting flowchart if you cannot obtain readings using the multimux or the readings are unstable then see the troubleshooting flowchart below for help in determining the nature of the problem. Does the multimux advance through the channels? Is 12v and g conn...