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7-14 Genius Modular Redundancy Flexible Triple Modular Redundant (TMR) System
User’s Manual – March 1995
GFK-0787B
%M12262 (Report)
When this control bit is turned on, it causes the GMR software to report and record the
following into the PLC Fault Table of the PLC(s) that turned it on:
The GMR Software Version currently running in the PLC. Example:
Application message (10840): GMR Ver:02.06
The GMR Configuration Utility Version used to create the G_M_R10 Program
Block. Example:
Application message (10841): Config Util Ver:04.01
The GMR Configuration File (G_M_R10 Program Block) Checksum. Example:
Application message (10842): GMR config CRC:2F4E
This checksum value can be used to verify what configuration file is running in a
GMR PLC. It should be recorded for each different configuration that is created, so it
can be used to determine exactly what configuration file is in a GMR PLC. The GMR
configuration checksum is also recorded in the GMR configuration utility printout of
a configuration.
The 40-character Configuration File Description.
This GMR control bit is infrequently used. It is typical to turn it on manually using
the Logicmaster 90-70 software, although it can also be turned on by the application
program if desired.
Clearing the PLC Fault Tables
Use these %M references to clear the PLC Fault Tables:
To clear the PLC Fault Table in a single PLC, set reference %M12259 to 1 for at least
one PLC sweep.
To clear the PLC Fault Table in all PLCs, set reference %M12264 to 1 for at least one
PLC sweep.
To clear the I/O Fault Table and corresponding fault contacts in all PLCs, set
reference %M12258 to 1 for at least one PLC sweep.
Monitor %M12238 (IORESIP) to determine when an I/O Fault Table reset is complete.
Caution
Do not use the Logicmaster F9 key to clear the Fault Tables.
Fault Table Clearing from the Logicmaster software can be prevented by
keeping it in Monitor mode.
Although the Fault Tables seem to operate as they would in a non-GMR system, they are
actually controlled by the GMR software, not the Logicmaster software. Instead, in a
GMR application, the fault tables must be monitored and cleared from the application
program logic.