Appendix C - Programming A New Modbus Slave Id (Address) - ACL CSC400 Installation And Operation Manual

Due to the potential for large amounts of noise to be conducted onto the RS485 cable, the Isolated GND terminal is connected
to the CSC400 earth ground to shunt noise away locally instead of at the Modbus master. This is done using a wire jumper
soldered onto the main CSC400 circuit board at jumper J23, to the left of the three Modbus terminals and Modbus DIP switch.
A solid ground connection should be made between a CSC400 earth ground terminal to an earth ground external to the
CSC400 using a minimum 16AWG wire.

Appendix C - Programming a New Modbus Slave ID (Address)

The default Modbus Slave ID for a new CSC400 is "2".
Press the Menu key to show the Top Menu. Press and hold the Down Arrow key to scroll down the Top Menu's options until
the cursor reaches "Modbus Settings" (see Figure 15). Press the select button.
The cursor (">") should be on the "Slave ID:" line of the "Modbus Settings Menu". If not, use the Up and Down arrow keys to
move the cursor to this line. Press the Select button. The cursor will blink ">" alternating with " " to indicate the Slave ID is
now in Edit mode.
Use the Up and Down buttons to modify the Modbus Slave ID to the new desired value and then press the Select button again
to exit Edit mode.
Press the Menu button twice to return to the main temperature display screen.
Figure 15 - Top Menu - Modbus Settings
Solenoid Drivers
Time Set
Date Set
>Modbus Settings
Figure 16 - Modbus Settings Menu
Modbus RTU
>Slave ID:
Baud Rate:
Format:
2
9600
8N1
59