Troubleshooting Tools
Product Manual 23
2.11 Interbus-S, slave DSQC 351
Designation Colour Description/Remedy
POWER-24 VDC Green Indicates that a supply voltage is present,
and has a level above 12 VDC.
NS/MS Green/red See section 2.14.
CAN Tx/CAN Rx Green/red See section 2.14.
POWER- 5 VDC Green Lit when both 5 VDC supplies are within
limits, and no reset is active.
RBDA Red Lit when this Interbus-S station is last
in the Interbus-S network.
If not as required, check parameter setup.
BA Green Lit when Interbus-S is active.
If no light, check network, nodes and
connections
RC Green Lit when Interbus-S communication
runs without errors.
Bus status LED’s
DSQC 351
ABB Flexible Automation
POWER
CAN Tx
CAN Rx
NS
MS
POWER
RC
RBDA
BA
Interbus-S
X3
X5
X21
X20
POWER
CAN Tx
MS
NS
RC
POWER
RBDA
BA
CAN Rx
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