Network Status Led; Master Configuration; Modbus Functions - Emerson Digistart CS User Manual

3.3

Network Status LED

The Network Status LED (1) indicates the state of the communications link between the module and the network. LED operation is as
follows:
Figure 3-3 Feedback LEDs
1
If communication is inactive, the soft starter may trip if the Communications Timeout function has been set on the module.
NOTE
When communication is restored, the soft starter will require a Reset.
4.

Master Configuration

For standard Modbus 11-bit transmission, the Master must be configured for 2 stop bits with No Parity and 1 stop bit for odd or even
parity.
For 10-bit transmission, the Master must be configured for 1 stop bit.
In all cases, the Master baud rate and slave address must match those set on the Modbus Module DIP switches.
5.

Modbus Functions

The Modbus Module supports the following Modbus functions:
•
03 Read multiple registers
•
06 Write single register
Modbus broadcast functions are not supported.
Digistart CS soft starters (including Remote Keypad):
•
Read multiple registers 40003 to 40008
•
Write single register 40002
Digistart IS soft starters:
•
Read multiple registers starting from 40003 up to a maximum of 119 register blocks.
•
Write single register 40002 or 40009 to 40599.
A multiple read across register boundary 40008/40009 will result in a Modbus Error code 05 at the Master.
NOTE
6
Off No connection or soft starter not powered up
On Communication active
Flashing Communication inactive
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Modbus Module User Guide
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