5

Error

 

 

 

 

 

 

 

 

 

 

 

Code

 

 

Message

 

Fault Description

 

 

Corrective Action

9

 

Primary and Secondary

The local unit cannot be placed in RUN

 

Modify the configuration or terminate

 

 

Units are Incompatible

mode when its redundancy configuration is

 

the C debugger session.

 

 

 

 

 

 

 

incompatible with the remote unit. This

 

 

 

 

 

 

 

 

 

 

error is logged when (1) Store of an

 

 

 

 

 

 

 

 

 

 

incompatible configuration is attempted and

 

 

 

 

 

 

 

 

 

 

(2) attempting to synchronize with an

 

 

 

 

 

 

 

 

 

 

incompatible configuration. This error is

 

 

 

 

 

 

 

 

 

 

also logged when the local unit and/or the

 

 

 

 

 

 

 

 

 

 

remote unit has a C debugger session active

 

 

 

 

 

 

 

 

 

 

and the units are attempting to synchronize.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

10

 

CPU to CPU

 

Synchronization protocol has been violated.

 

If this fault is also accompanied by an

 

 

communications

 

 

 

 

RCM failed fault, replace the failed RCM:

 

 

terminated

 

 

 

 

otherwise power cycle the CPU or CPUs.

11

 

Redundant Link has timed

The RCM has timed out while waiting on

 

Power cycle the back-up CPU (CPU not

 

 

out

 

 

 

 

communications from the other unit.

 

controlling the process); increase the fail

 

 

 

 

 

 

 

 

 

 

wait time.

12

 

Units Are Not Fully

Due to actions taken by the user, the two

 

Enable the data transfer copy on the

 

 

Synchronized

 

units in a CPU redundant system are not

 

backup unit

 

 

 

 

 

 

 

fully synchronized. This means the backup

 

 

 

 

 

 

 

 

 

 

unit is not executing with the same inputs

 

 

 

 

 

 

 

 

 

 

and/or outputs as the active unit while the

 

 

 

 

 

 

 

 

 

 

units are synchronized due to data transfers

 

 

 

 

 

 

 

 

 

 

being disabled.

 

 

 

 

 

 

 

 

 

 

 

 

 

>12

 

CPU Redundancy Status

A change in the status of the system has

 

Corrective action to be taken depends on

 

 

has Changed

 

occurred.

 

 

the error code.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

The following table lists messages, descriptions, and corrective actions for error codes associated

 

 

 

 

with redundancy in other fault groups.

 

 

 

 

 

 

 

 

 

 

 

 

Group

 

Error

 

 

 

 

 

 

 

 

 

 

 

Code

 

Message

Fault Description

 

Corrective Action

Loss of

 

 

57

 

Redundant link hard

The RCM has been faulted due to an

Power cycle the rack with the

Option

 

 

 

 

failure occurred.

error while accessing memory.

 

faulted RCM. If the RCM's

Module

 

 

 

 

 

 

 

 

 

BOARD OK LED is on, replace

 

 

 

 

 

 

 

 

 

 

 

the cable between the RCM and

 

 

 

 

 

 

 

 

 

 

 

the BTM. If the RCM's BOARD

 

 

 

 

 

 

 

 

 

 

 

OK LED is off, replace the RCM.

 

 

 

 

 

 

 

PLC Software

 

148

 

Units contain

The firmware in the redundant CPUs

Upgrade the CPUs so that they

 

 

 

 

 

 

mismatched firmware;

has different revision levels. Having

have the same revision of

 

 

 

 

 

 

update recommended.

different revisions of firmware in the

firmware according to the

 

 

 

 

 

 

 

 

CPUs is intended for short-term

 

firmware upgrade procedure.

 

 

 

 

 

 

 

 

synchronization only as some change in

 

 

 

 

 

 

 

 

 

the behavior of the system may be

 

 

 

 

 

 

 

 

 

experienced when mixing revisions.

 

 

 

 

 

 

 

 

 

 

 

 

 

5-4

Series 90™-70 Enhanced Hot Standby CPU Redundancy User's Guide – May 2000

GFK-1527A

Page 68
Image 68
GE 90-70 manual With redundancy in other fault groups