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31.2  Preparatory Procedures for Monitoring
31.2.5  Attacing communication unit and connecting cable
31.2.5 Attacing communication unit and connecting cable
Precautions for cable connection or installation of the option function board or 
communication unit
Before installing the option function board or communication unit or connecting 
cables, shut off all phases of the power supply to the GOT.
1 Attacing the Option function board
Option function board
For details on the option function board, refer to the following manual:
GT15 OPTION FUNCTION BOARD/OPTION FUNCTION BOARD WITH 
ADD-ON MEMORY User's Manual
2 Attacing the communication unit
Ethernet communication unit
For details on the Ethernet communication unit, refer to the following manual:
GT15 Ethernet Communication Unit User's Manual
3 Connecting the cable
1 Attach the option function board to the option 
function board interface on the GOT.
1 Attach the Ethernet communication unit to the 
extension unit connector on the GOT.
1 Connect the twisted pair cable to the Ethernet 
communication unit.