Despatch Protocol Plus Modbus Communications - Manual (Page 11)

Chromalox Instruments and Controls
A-51643 Rev. 6 10/06/03 5
2.4.2 Communication Card Jumper Settings
1. Turn off power to the controller.
2. Remove the back cover of the controller (if it is not already removed) by removing the two screws at
the top of the unit.
3. Set the jumpers on the communication card for the desired serial communication interface based on
Figure 5: Communication Card (0113-10175) Jumper Settings.
4. Reinstall the back cover.
5. Reapply power to the controller.
Figure 5: Communication Card (0113-10175) Jumper Settings
RS232 Jumper Settings RS422 Jumper Settings RS485 Jumper Settings