Remote Line Controller (RLC) - Grostech.com

Product Manual
Remote Line Controller (RLC)
Status LEDs
Once the board is running the status can be monitored on the LEDs mounted on the front of the
board. There are six LED’s, only five of which are currently used. See a description of each
below.
Jbus (yellow)
This LED indicates the drive of the JANUS IDC/IPC communications bus. This should be ON
when using RS-422A.
Pbus (yellow)
This indicated the drive of the local Pbus. Normally OFF.
Run (green)
Indicated the main RLC processor is running. Normally ON.
Pulse (green)
Indicates the supervisory processor is running. Normally PULSING.
Eng1 (red)
Indicates any abnormal conditions. Normally OFF. The RLC will indicate a problem by flashing a
code made up of a combination of 8 long or short pulses. A long flash indicates a problem. By
counting through the chain of 8 flashes and taking note of which are long, the problem can be
determined. Table 3 below gives the meaning of each long flash.
Flash # Problem
1 RLC requires a reload (memory has been cleared)
2 Can not establish communications with modem
3 Can not establish communications with Jancomms
4 Lost communications with an IDC/IPC (box off-line)
5 Mains power to RLC has failed
6 Battery voltage to RLC is low
7 Unused
8 Unused
Table 3. Fault diagnosis.
If Eng1 is on continuously, this indicates an internal fault.
Eng2 (red)
Not currently used. Normally OFF.
PM004R02 – November 2001 Page 7 of 11
Grosvenor Technology Ltd © 2001