Publication 2364F-5.05 - March 1999
3-8
Troubleshooting Faults and Warnings
28
P177 bit 12
DualPort TO
The DSP did not receive any data from the
host processor. The DSP assumes that the
host is not running.
Clear the fault and try resetting/restarting the RGU. Verify that all
connections to the main control board are in place, and check the
main control board for any obvious damage or any debris which may
be shorting circuitry. If necessary, try reinstalling the firmware (or
upgrade to the latest available firmware). Replace the board and/or
send the board in for repair if the problem cannot be resolved.
29
P177 bit 13
Not Used
30
P177 bit 14
Not Used
31
P177 bit 15
DSP Fault
DSP is in faulted state (reason unknown).
Clear the fault and try resetting/restarting the RGU. Verify that all
connections to the main control board are in place, and check the
main control board for any obvious damage or any debris which may
be shorting circuitry. If necessary, try reinstalling the firmware (or
upgrade to the latest available firmware). Replace the board and/or
send the board in for repair if the problem cannot be resolved.
32
P180 bit 0
Clock Loss
W
The host processor was reset due to a clock
loss.
Try resetting/restarting the RGU when possible. Verify that all
connections to the main control board are in place, and check the
main control board for any obvious damage or any debris which may
be shorting circuitry. If necessary, try reinstalling the firmware (or
upgrade to the latest available firmware). Replace the board and/or
send the board in for repair if the problem cannot be resolved.
33
P180 bit 1
Double Bus
W
The host processor was reset due to a
memory access error. The memory device
was not responding in cycle.
Try resetting/restarting the RGU when possible. Verify that all
connections to the main control board are in place, and check the
main control board for any obvious damage or any debris which may
be shorting circuitry. If necessary, try reinstalling the firmware (or
upgrade to the latest available firmware). Replace the board and/or
send the board in for repair if the problem cannot be resolved.
34
P180 bit 2
Watchdog
W
The host processor was reset due to a
watchdog situation.
Try resetting/restarting the RGU when possible. Verify that all
connections to the main control board are in place, and check the
main control board for any obvious damage or any debris which may
be shorting circuitry. If necessary, try reinstalling the firmware (or
upgrade to the latest available firmware). Replace the board and/or
send the board in for repair if the problem cannot be resolved.
35
P180 bit 3
En at Pwr Up
The RGU enabled immediately at power up.
Verify that the parameters are programmed appropriately. If the
RGU is set to ‘Local Mode Only’ (P8 = 0), then this fault can be
suppressed or can be reported as a warning by reprogramming
P181 and/or P182.
36
P180 bit 4
Battery Low
W
The lithium battery in the battery-backed
RAM is low. If the RGU is powered down, all
setup parameters will be lost.
Replace the battery on the U11 RAM chip as indicated in chapter 4
(or send the main control board in for repair).
37
P180 bit 5
TIO Loss
The slave RGU could not synchronize with the
master RGU on power up since the TIO signal
could not be found.
Verify that the master unit is operating properly. Check the R2R
boards and fiber optic connections. Secure all terminals. If an R2R
hub board is equipped, verify the wiring arrangement. Reset the
RGUs.
38
P180 bit 6
R2R Dup Addr
The CAN chip detected two nodes trying to
use a duplicate address.
Verify that only one unit is set as a master unit (P5). Check the R2R
boards and fiber optic connections. Secure all terminals. If an R2R
hub board is equipped, verify the wiring arrangement. Reset the
RGUs. If necessary, reinstall or upgrade the firmware.
39
P180 bit 7
Lost Master
The slave RGU is not receiving data from the
master unit (seen only on a slave RGU in a
master-slave configuration).
Check the R2R boards and fiber optic connections. Secure all
terminals. If an R2R hub board is equipped, verify the wiring
arrangement. Verify that the master RGU is operating properly.
Reset the RGUs.
Number Fault
Indicates
Action
