Rockwell Automation 1786-series ControlNet Fiber Media Planning and Installation Guide - Manual (Page 78)

78 Rockwell Automation Publication CNET-IN001C-EN-P - October 2011
Appendix B Status Indicators
1786-RPFRL/B or 1786-RPFRXL/B Relay Contact Connectors
The 1786-RPFRL/B and 1786-RPFRXL/B fiber repeater modules contain a
single electromechanical relay for communication and system status. The relay
provides an efficient way to locate a faulted module.
Repeater module Red Excessive receive signal distortion.
Review these items:
• Be certain that you are using the
correct fiber type for your
module.
• Check fiber length and
attenuation to make sure that it
is within specification.
• Replace the downstream
1786-RPFRL module on the
channel that has the
intermittently flashing red
status indicator.
• Be certain that your total
network length is not out of
specification.
• Be certain that SMAX is
correctly defined in the
RSNetWorx for ControlNet
software.
Table 15 - Relay Contact Connector Diagnostics
Indicator Status Description
Channel 1 or
channel 2 Not solid green The relay contact is open.
No receive data is present at one or
both fiber-optic ports for more than
1300 ms (that means if either of the
channel status indicators are not
solid green, the fault relay opens.)
The repeater is not connected to
the power supply.
Off The relay contact is closed.
Neither of the above conditions
is met.
Table 14 - Long- or Extra-long Fiber Repeater Modules
Indicator Status Description
Relay Contact Connector
31531-M