ABB IRB 6600 - 175/2.55 User Manual page 311

Designation
POWER-24 VDC Green
NS/MS
CAN Tx/CAN Rx
POWER- 5 VDC
RBDA
BA
RC
3HAC 16245-1
Color Description
Indicates that a supply voltage is present, and has a level
above 12 VDC.
Green/red See section "CAN bus status LED description".
Green/red See section "CAN bus status LED description".
Green Lit when both 5 VDC supplies are within limits, and no
reset is active.
Red Lit when this Interbus-S station is last in the Interbus-S net-
work.
If it is not (which is required), check parameter setup.
Green Lit when Interbus-S is active.
If there is no light, check network, nodes and connections.
Green Lit when Interbus-S communication runs without errors.
A
5 Electrical connections
5.6.2 Interbus-S, slave DSQC 351
109