Honeywell CIU 888 Troubleshooting And Maintenance Manual page 32

Problem
In redundant CIU configuration, one
of the CIUs goes to factory reset sta-
tus after configuration update.
In redundant CIU configuration, when
tanks are deleted and configuration
update is performed CIU goes to dual
passive if the reload INI is not per-
formed in Entis Pro.
Unable to install previous version of
Service Tool (R120.2, R130.1,
R130.2, R130.3) when newer version
is already installed.
In Modbus TCP/IP host
communica-tion, time out error is
observed for t emperature profile
enable/disable command and
interface density pro-file upper and
lower level limit over-writes.
In Channel Sequencing, temperature
profile scan period is allowed even if it
is invalid.
User not able to download the logs
form diag.html and audit & events.
In temperature profile record, element
Position values are zero in Modbus
host for TRL2 990 with VITO.
2 - 6
Software Troubleshooting and Error Messages
Cause
CIUs site topology has dual masters
(2 systems issuing switchover com-
mand. Example: Entis Pro and Expe-
rion). During configuration update
multiple switchovers are initiated and
CIU goes to factory reset status.
Entis Pro encounters communication
failures for tank record requests for
the deleted tanks and gives multiple
switchover commands to CIU which
result in a dual passive scenario.
Installer issue
Since in Modbus host, configured tim-
eout is lesser than the response time
UI validation is not handled in service
tool for channel sequencing for Tem-
perature Profile Scan Period.
The popup window might be blocked
or missing redirection.
Improper configuration in the guage.
Troubleshooting & Maintenance Guide
CIU 888
Solution
If CIU went to this state then reset
both CIUs and perform set up redun-
dancy to recover back.
Ensure that site topology has only
one Master (one host system controls
CIU redundancy and issues switcho-
ver command) so that this issue
would not happen.
1. Reload INI files in Entis Pro
2. Power off secondary CIU
3. Power on Secondary CIU. It takes
Secondary role and LCD also
shows that the Primary CIU is
scanning.
4. Power off Primary CIU
5. Secondary CIU becomes the
Primary and it starts scanning.
6. Power on Primary CIU. It takes
Secondary CIU role
1. Uninstall the latest versions of
service tool.
2. Install the required version.
Newer versions of service tools can
now be re-installed.
Configure response time out
around 1500 msec.
Refer to section 3.2.7.1 in the Config-
uration Manual (Part No. 4417584) for
more information.
1. Unblock the popup windows.
2. Use 192.168.1.1/index.html to
download audit & events.
Properly configure the guage.
Part No.: 4417594_Rev11