Table 22: FS = Fieldbus Status
Protocol is not communicating
Protocol is communicating
Table 23: LED Combinations
No power. All LEDs are OFF
Option board firmware is corrupted or missing.
Option board is operational
Yellow blinking (1 s
ON / 1 s OFF)
Protocol is ready for communications.
Protocol is communicating. The option board is receiving requests from the PLC
master and sending responses to the requests.
Protocol communication fault. BS is blinking to indicate a fault. PS is blinking to
indicate that protocol is ready for communications.
7.3 LED Indications on OPTC2/C8 and OPTCJ Option Boards
The LED indications are the same on OPTC2/C8 and OPTCJ option boards.
Illustration 48: LED Indications on VACON
®
OPTC2/C8 and OPTCJ Option Boards
Table 24: BS = Board Status, Yellow
Option board not activated
Option board in initialization state waiting for activation command from the AC drive
Blinking fast (once per s)
Option board is activated and in RUN state
Option board is ready for external communication
Blinking slow (once per 5 s)
Option board is activated and in FAULT state
Internal fault of option board
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Troubleshooting
VACON® RS485 and CAN Bus Option Boards
Installation Guide