WEG CFW100 User Manual - page 13
Programming
P0682 – SERIAL CONTROL WORD
Range:
0000h to FFFFh
Default: 0000h
Properties:
-
Description:
It is the device Modbus RTU interface control word. This parameter can only be changed via serial interface. For
the other sources (HMI, etc.) it behaves like a read-only parameter.
In order to have those commands executed, it is necessary to program the equipment to be controlled via
serial. This programming is achieved by means of parameters P0105 and P0220 to P0228.
Each bit of this word represents a command that can be executed.
Bits
15 to 8
7
6
5
4
3
2
1
0
Function
R
es
er
ved
Fau
lt r
es
et
R
es
er
ved
S
eco
nd
ramp
LO
C
/RE
M
JOG
S
peed
d
irect
io
n
G
en
er
al
en
ab
le
R
un/
S
to
p
Table 3.4: P0682 parameter bit functions
Bits
Values
Bit 0
Run/Stop
0: It stops the motor with deceleration ramp.
1: The motor runs according to the acceleration ramp until reaching the speed reference value.
Bit 1
General enable
0: It disables the drive, interrupting the supply for the motor.
1: It enables the drive allowing the motor operation.
Bit 2
Speed direction
0: To run the motor in a direction opposed to the speed reference.
1: To run the motor in the direction indicated by the speed reference.
Bit 3
JOG
0: It disables the JOG function.
1: It enables the JOG function.
Bit 4
LOC/REM
0: The drive goes to the Local mode.
1: The drive goes to the Remote mode.
Bit 5
Second ramp
0: The drive uses the first ramp values, programmed in P0100 and P0101, as the motor acceleration and
deceleration ramp times.
1: The drive is configured to use the second ramp values, programmed in P0102 and P0103, as the motor
acceleration and deceleration ramp times.
Bit 6
Reserved.
Bit 7
Fault reset
0: No function.
1: If in a fault condition, then it executes the reset.
Bits 8 to 15
Reserved.
P0683 – SERIAL SPEED REFERENCE
Range:
-32768 to 32767
Default: 0
Properties:
-
Description:
It allows programming the motor speed reference via the Modbus RTU interface. This parameter can only be
changed via serial interface. For the other sources (HMI, etc.) it behaves like a read-only parameter.
In order that the reference written in this parameter be used, it is necessary that the drive be programmed to
use the speed reference via serial. This programming is achieved by means of parameters P0221 and P0222.
This word uses a 13-bit resolution with signal to represent the motor rated frequency (P0403).
P0683 = 0000h (0 decimal)
→ speed reference = 0
P0683 = 2000h (8192 decimal)
→ speed reference = rated frequency (P0403)
Intermediate or higher reference values can be programmed by using this scale. E.g.60Hz rated frequency, to
obtain a speed reference of 30 Hz one must calculate:
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