Rockwell Automation 1788 NetLinx Media Checker Users Manual - Manual (Page 25)

Testing the Wire Map (WIRE MAP) 25
1788-UM002A-US-P – April 2000
When the MediaChecker detects something on the far
end of the cable, but cannot determine if it is the Cable
ID, “ID” is displayed. The MediaChecker alternately
displays “??” and “RA” when the Cable ID is detected but
a problem with the cable or with the Cable ID is interfering
with the identification process.
Without the Cable ID connected to the far end of the
cable, the MediaChecker displays “--”.
The following display indicates the near end wiring of a
cable without the Cable ID connected:
aan14f.eps
Table 11 shows example of wire map failures on
DeviceNet cable.