Emerson PACSystems RX3i User Manual page 69

PACSystems™ RX3i and RSTi-EP CPU Reference Manual
GFK-2222AK
Fault Parameters
System Bus Error (Fault group 12.) When a bus error occurs on the backplane, system variable
#SBUS_ER
(To turn it OFF, cycle power on the main rack.)
Default: Fatal.
I/O Controller or (Fault group 9.) When a Bus Controller reports a bus fault, a global memory fault, or
I/O Bus Fault an IOC hardware fault, system variable #IOC_FLT (%SA22) turns ON.
(To turn it OFF, cycle power on the rack containing the module when the
configuration matches the hardware after a download.)
Default: Diagnostic.
System (Fault group 11.) When a configuration mismatch is detected during system power-
Configuration up or during a download of the configuration, system variable #CFG_MM (%SA9)
Mismatch turns
(To turn it OFF, power up the PLC when no mismatches are present or download a
configuration that matches the hardware.)
This parameter determines the fault action when the CPU is not running. If a system
configuration mismatch occurs when the CPU is in RUN Mode, the fault action will be
Diagnostic. This prevents the running CPU from going to STOP/FAULT mode. To
override this behavior, see Configuring the CPU to Stop Upon the Loss of a Critical
Module.
Default: Fatal.
Fan Kit Failure (Fault group 0x17.) When a fault is detected in the Smart Fan kit, system variable
#FAN_FLT (%SA7) turns ON.
(To turn a fan kit fault OFF, clear the Controller fault table or reset the PLC.)
Default: Diagnostic.
Recoverable Local Redundancy CPUs only. (Fault group 38) Determines whether a single-bit ECC error
Memory Error causes the CPU to stop or allows it to continue running.
Choices: Diagnostic, Fatal.
Default: Diagnostic.
Note:
CPU Over (Fault group 24, error code 1.) When the operating temperature of the CPU exceeds
Temperature the normal operating temperature, system variable #OVR_TMP (%SA8) turns ON.
(To turn it OFF, clear the Controller Fault Table or reset the PLC.)
Default: Diagnostic.
Controller Fault (Read-only.) The maximum number of entries in the Controller Fault Table.
Table Size Value set to 64.
I/O Fault Table Size (Read-only.) The maximum number of entries in the I/O Fault Table.
Value set to 64.
3.2.7.1 Configuring the CPU to Stop Upon the Loss of a Critical Module
In some cases, you may want to override the RUN Mode behavior of the System
Configuration Mismatch fault. A given module may be critical to the PLC's ability to
CPU Configuration
(%SA32)
When a multiple-bit ECC error occurs, a Fatal Local Memory Error fault (error
code 169) is logged in the CPU Hardware Fault Group (group number 13).
Section 3
October 2019
turns ON.
ON.
61