Automationdirect.com Stellar SR44, User Manual

Page: 174 / 238

Chapter 6: Serial Communications
6.7.1 – CLICK PLC Example Program (continued)
Enable Time
Comm
b
C11
SET
Read Status
Interlock
b
C10
Receiving
Success
Error
ErrCode
Status Word from Strtr
h
DH1
Receive (Port3)
Slave ID
Modbus Function Code
Slave Addr
NO. of Master Addresses
Word Swap
MODBUS
1
03
400008
1
OFF
Master
Status Comm
Receiving
b
C200
Status Comm
Success
b
C201
Status Comm Read
Error
b
C202
Read Status
Interlock
b
C10
_Port_2_
Ready_Flag
b
SC100
3
This rung will be performing nearly all the comms with the starter. It will continuously read
parameters P8 and P9 (the soft starter is 8-bit based) and the CLICK performs communications by
16-bit words. So the single value that is retrieved from the soft starter contains 2 values.
Since both values are actually bit patterns, they are placed directly into a Hex data register DH1.
This will be copied to C bits further in the program.
Enable Time
Comm
b
C11
Sending
Success
Error
ErrCode
i
DS30
Send (Port3)
Slave ID
Modbus Function Code
Slave Addr
MODBUS
1
06
400125
Master
Control Comm
Sending
b
C210
Control Comm
Success
b
C211
Control Comm
Error
b
C212
i
DS105
_Port_2_
Ready_Flag
b
SC100
Start SoftStart
b
C21
4
This rung will be used for Start/Stop control of the unit. It will only be activated when the user
activates the Start and Stop inputs, which will send a value of "7" (Start) or "8" (Stop), contained in
DS30, to the "Command Register" (P124) of the unit.
Stop SoftStart
b
C23
i
DS100
SR44 Series Soft Starter User Manual
1st Ed, Rev B 07/31/2019
6–20