Rockwell Automation SB3000 Configuration and Programming - Manual (Page 38)

3-20 SB3000 Drive Configuration and Programming
I/O Control Register 101/1101
The I/O Control Register contains the bits that control the EXT FLT LED on the PMI Processor, the auxiliary
output on the Resolver & Drive I/O module, and the loopback test.
External Fault LED Bit 2
The External Fault LED command bit is set
by the application task to turn on the EXT
FLT LED on the PMI Processor. Hex Value: 0004H
Sug. Var. Name: EXT_FLT@
Access: Read/Write
UDC Error Code: N/A
LED: EXT FLT
Auxiliary Output Bit 4
The Auxiliary Output bit is set to turn on the
auxiliary output on the Resolver & Drive I/O
module in the PMI rack. Hex Value: 0010H
Sug. Var. Name: AUX_OUT@
Access: Read/Write
UDC Error Code: N/A
LED: AUX OUT
UDC Module External Loopback Bit 15
The UDC Module External Loopback bit is
set to enable the external loopback test on
the UDC module's fiber-optic ports. Hex Value: 8000H
Sug. Var. Name: UDC_LB@
Access: Read/Write
UDC Error Code: N/A
LED: N/A
Register 101, bit 15, controls the COMM A test while register 1101, bit 15, controls
the COMM B test. Note that this bit must be reset to 0 before the loopback
connector is removed from the UDC module's fiber-optic ports. Refer to the
Fiber-Optic Cabling instruction manual for specific instructions on performing the
loopback test.