Honeywell 900 User Manual page 62

Main Menu
Diagnostics
Item Status
RSM SWITCH
MISMATCH
NO RSM MODULE
DETECTED
BAD RSM SWITCH
(LEAD)
BAD RSM SWITCH
(RESERVE)
Item
CPU STATUS
MEMORY STATUS
RTC STATUS
I/O RACK COMM PORT
STATUS
RACK I/O MODULE
STATUS
COMM PORTS
E1/E2/S1/S2 STATUS
50
Possible Cause
The lead and reserve
controller are both
reading the switch on
the RSM, but are getting
different values.
Switch on RSM is set
between two positions.
RSM Module is not
inserted
RSM Module has failed
Switch is indicating an
invalid position
Switch is indicating an
invalid position
Status
GOOD
ERROR IN RACK 1
ERROR IN RACK 2
ERROR IN RACK 3
ERROR IN RACK 4
ERROR IN RACK 5
ERROR IN LEAD CPU
ERROR IN RESERVE CPU
ERROR ON SERIAL PORT S1
ERROR ON SERIAL PORT S2
ERROR ON E1 NETWORK PORT
ERROR ON E2 NETWORK PORT
ERROR ON SCANNER I/O LINK
900 Control Station User Guide
Controller Action
The controller will
Replace the RSM
continue to operate
with a bad RSM.
Replace the reserve CPU
Automatic failover is
still possible if
Force a failover and replace the
required.
new reserve CPU
Contact Honeywell service
The controller will Make sure switch is in desired
continue to operate position
with a missing RSM.
Automatic failover is
Install RSM module
still possible if
a)
required.
Replace RSM
The controller will Replace RSM
continue to operate
with a bad RSM.
Force a failover and replace the
Automatic failover is
CPU (formerly the lead, now the
still possible if
reserve)
required.
The controller will
Replace RSM
continue to operate
with a bad RSM.
Replace the reserve CPU
Automatic failover is
still possible if
required.
Possible Cause
REFER TO Table 26 (page 51)
REFER TO Table 26 (page 51)
REFER TO Table 26 (page 51)
REFER TO Table 26 (page 51)
REFER TO Table 26 (page 51)
REFER TO Table 27 (page 57)
REFER TO Table 27 (page 57)
REFER TO Table 7 (page 24)
REFER TO Table 7 (page 24)
REFER TO Table 11 (page 28)
REFER TO Table 11 (page 28)
REFER TO Table 26 (page 51)
Redundant Overview
What to do
Revision 9
May 2014