User`s manual

Error code list Troubleshooting
MELSEC System Q, Hardware 11 – 87
6060
CPU MODE DIFF.
In a redundant system, the operation mode
(backup/separate) differs between the control
system and standby system.
(This can be detected from the standby system
of the redundant system.)
 Collateral information

Common Information: —
 Individual Information: —
 Diagnostic Timing
At power ON/At reset/At tracking cable connec-
tion/
Match the operation modes of the control sys-
tem and standby system.
OFF Flicker Stop QnPRH
6061
CPU MODE DIFF.
In a redundant system, the operation mode
(backup/separate) differs between the control
system and standby system.
(This can be detected from the standby system
of the redundant system.)
 Collateral information

Common Information: —
 Individual Information: —
 Diagnostic Timing
When an END instruction executed
Match the operation modes of the control sys-
tem and standby system.
OFF Flicker Stop QnPRH
6062
CPU MODE DIFF.
Both System A and B are in the same system sta-
tus (control system).
(This can be detected from the system B of the
redundant system.)
 Collateral information

Common Information: —
 Individual Information: —
 Diagnostic Timing
At power ON/At reset/At tracking cable connec-
tion/
Power the CPU module (System B) which
resulted in a stop error, OFF and then ON.
OFF Flicker Stop QnPRH
6100
TRK. TRANS. ERR.
– An error (e.g. retry limit exceeded) occurred
in tracking data transmission.
(This error may be caused by tracking cable
removal or other system power-off (including
reset).)
– The error occurred at a startup since the
redundant system startup procedure was not
followed.
 Collateral information

Common Information: Tracking transmission
data classification
 Individual Information: —
 Diagnostic Timing
Always
– Check the CPU module or tracking cable. If
the error still occurs, this indicates the CPU
module or tracking cable is faulty.
Contact your local Mitsubishi representative.
– Confirm the redundant system startup proce-
dure, and execute a startup again.
ON ON Continue QnPRH
6101
TRK. TRANS. ERR.
– A timeout error occurred in tracking (data
transmission).
(This error may be caused by tracking cable
removal or other system power-off (including
reset).)
– The error occurred at a startup since the
redundant system startup procedure was not
followed.
(This can be detected from the control system or
standby system of the redundant system.)
 Collateral information

Common Information: Tracking transmission
data classification
 Individual Information: —
 Diagnostic Timing
Always
– Check the CPU module or tracking cable. If
the error still occurs, this indicates the CPU
module or tracking cable is faulty.
Contact your local Mitsubishi representative.
– Confirm the redundant system startup proce-
dure, and execute a startup again.
ON ON Continue QnPRH
Error
code
Error contents and cause Corrective action
LED status
CPU
status
Corre-
sponding
CPU
RUN ERR.
Tab. 11-8: Error code list (6000 to 6999) for PLC CPUs of MELSEC System Q