Honeywell Series 8 I/O - IOM Behavior During Hard Failures

13. Series 8 I/O Alarms and Failures
13.3. Reviewing IOM hard failures
R500 Series 8 I/O User's Guide 289
April 2017 Honeywell
Step
Action
IOMLHFSTA / IOMLHFSTB parameters.
3
Record the IOM firmware and hardware revisions located on the
Configuration Form's Maintenance tab:
 Hardware Revision of the failed IO module.
 Firmware Revisions (Boot Image and Application Image) of the failed IO
module.
 Release number of the Experion system in which the IO module was
operating.
4
Extract the C300 Controller internal logs using the CTool Application.
5
Extract the IOM internal logs (trace and crash logs) using the CTool
Application.
6
Report the problem to Honeywell TAC and provide all data captured in steps
2-5.
IOM Behavior during Hard Failures
When the IOM hard fails and switch over to the secondary does not take place:
 For a Digital Output module:
 all field output terminals for channels with DOTYPE = STATUS go to the
configured fault state.
 the field output terminals for channels with other DOTYPE go unpowered.
 For an Analog Output module, all field output terminals go unpowered
 INITREQ is asserted on all associated Output Channel Blocks
 the IOM icon in the Monitor tab becomes RED
 the Detail Display shows No Response