Rockwell Automation T8082 Trusted Toolset Suite - Manual (Page 29)

Trusted
TM
Toolset Suite T8082
Issue 14 Feb 10 PD-T8082 29
IMBTO = < value >
The IMBTO (Inter-Modular Bus Timeout) is a timer run internally within each I/O module from start-up.
If the TMR Processor does not scan the module within the programmed time, the module adopts the
shutdown mode. In the majority of Trusted
Systems, this entry may be omitted and the default used.
In systems that are very large, or for test purposes, e.g. to allow the application program to be paused,
it may be necessary to adjust the timeout period. The timeout period is defined in milliseconds; a value
of zero disables the timeout.
Note: This value MUST NOT be set to zero for operational systems.
WDOGTO = < value >
The WDOGTO (System Watchdog Timeout) is a timer run internally within each I/O module from
start-up. If the TMR Processor does not pet the module’s watchdog within the programmed time, the
module adopts the shutdown mode. However this parameter adjusts the system watchdog timeout
interval. Again, it is not normally necessary to adjust this parameter, unless the system is very large or
to allow certain tests to be performed. The timeout value is entered in milliseconds, and a value of
zero disables the timeout.
Note: This value MUST NOT be set to zero for operational systems.
PWRFAILTO = < value >
The PWRFAILTO (Power Fail Timeout) adjusts the interval between the system detecting loss of both
24V power feeds to the module initiating its power-down sequence and fail-safe operation. Only in
exceptional cases will it be necessary to adjust this setting. The timeout value is entered in
milliseconds, and a value of zero disables the timeout.
Note: This value MUST NOT be set to zero for operational systems.
BYPASSTO = < value >
The BYPASSTO (Bypass Timeout) is used internally in the module to bypass the other timeouts during
an Active/Standby changeover. Only in exceptional cases will it be necessary to adjust this setting.
The timeout value is entered in milliseconds, and a value of zero disables the timeout.
Note: This value MUST NOT be set to zero for operational systems.