Modbus Module User Guide
5
Issue 1
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3.
Modbus Module Connection and Configuration
3.1
Adjustment
Network communication parameters must be set on the Modbus Module. DIP switch settings take effect on the power-up of the Modbus
Module via the soft starter.
Figure 3-1 Adjustment switches
Protocol
Address
Baud Rate
Parity
Timeout
(seconds)
4800
OFF
OFF
9600
OFF
ON
19200
ON
38400
ON
ON
OFF
No Parity
OFF
OFF
ODD
OFF
ON
EVEN
ON
10 bit
ON
ON
OFF
No Time Out
OFF
OFF
10 s
OFF
ON
60 s
ON
100 s
ON
ON
OFF
AP
ASCII
OFF
RTU
ON
Example: Address = 24
+16
+8
+4
+2
+1
0
0
0
0
0
ON
+16
+8
+4
+2
+1
0
0
0
0
0
ON
3.2
Connection
Figure 3-2 Modbus Module connections
Digistart CS
Digistart IS
0
8
6
4
9
.A
1
2
3
0
8
6
5
0
.A
1
2
3
Digistart CS
Digistart IS (Remote mode)
Modbus Module – RS485 serial port
DI2, +24V: Stop
RS485 connection onto Modbus network
DI3, +24V: Reset
Modbus Module – RS485 serial port
RS485 connection onto Modbus network
For the Modbus Module to accept serial commands, a link must be fitted across terminals CSL-DI2 on Digistart CS starters.
Input links are required across terminals DI2, +24V and DI3, +24V if the Digistart IS soft starter is being operated in Remote mode. In
Local mode, links are not required.
NOTE
Digistart IS Pr
3O
Comms in Remote
selects whether the soft starter will accept Start, Stop or Reset commands from the
Serial Network Master while in Remote mode. See the Digistart IS User Manual for parameter details.
