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Chapter Objectives
Troubleshooting
Use this chapter to help you troubleshoot your Serial Communications
system using the LED indicators on the front of the device (Figure 6.1).
The Communications Module is a non-serviceable device that should be
returned to Allen-Bradley for replacement when a major fault exists that is
attributable to the Communications Module itself.
Figure 6.1
LED Locations
TX
Serial STS
SCANport STS
RX
J2
Front View Enclosed Version
ATTENTION: Servicing energized industrial control equipment
can be hazardous. Electrical shock, burns, or unintentional
actuation of controlled industrial equipment may cause death or
serious injury. Follow the safety-related practices of NFPA 70E,
Electrical Safety for Employee Workplaces, when working on or
near energized equipment. Do not work alone on energized
equipment.
Chapter
6
Chapter
Front View Open Version
SW3
SW2
SW1
J4
RX
SCANport STS
Serial STS
TX
AB0414C
6-1
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