Mitsubishi MELSEC L Series User Manual page 163

Error
Error Contents and Cause
Code
[SP.UNIT LAY ERR.]
The unusable module is mounted on the extension
base unit in the redundant system.
■Collateral information
2128
• Common information: Module No. (Slot No.)
• Individual information:-
■Diagnostic Timing
• At power-on/At reset
[SP. UNIT VER. ERR.]
In a multiple CPU system, the control CPU of the
intelligent function module incompatible with the
multiple CPU system is set to other than CPU
No.1.
2150 ■Collateral information
• Common information: Module No. (Slot No.)
• Individual information:-
■Diagnostic Timing
• At power-on/At reset/At writing to programmable
controller
[SP. UNIT VER. ERR.]
Either of the following modules incompatible with
the redundant system has been mounted in a
redundant system.
• MELSECNET/H modules
• Ethernet modules
2151
• CC-Link IE Controller Network modules
■Collateral information
• Common information: Module No. (Slot No.)
• Individual information:-
■Diagnostic Timing
• At power-on/At reset/At writing to programmable
controller
[SYSTEM LAY ERR.]
A module which the LCPU cannot recognize is
connected.
■Collateral information
2170
• Common information:-
• Individual information:-
■Diagnostic Timing
At power-on/At reset
[SYSTEM LAY ERR.]
• The branch module is not connected on the right
of the CPU module or the extension module.
• The branch module is not connected on the left
of the END cover.
2171
■Collateral information
• Common information: Module No. (Slot No.)
• Individual information: -
■Diagnostic Timing
• At power-on/At reset
[SYSTEM LAY ERR.]
More than one branch module is connected on the
same block.
■Collateral information
2172
• Common information: Module No. (Slot No.)
• Individual information: -
■Diagnostic Timing
• At power-on/At reset
Corrective Action
• Remove the unusable module from the
extension base unit.
• Change the intelligent function module for the
one compatible with the multiple CPU system
(function version B).
• Change the setting of the control CPU of the
intelligent function module incompatible with
the multiple CPU system to CPU No.1.
Ensure that the module supports the use in a
redundant system when using any of the following
modules.
• MELSECNET/H modules
• Ethernet modules
• CC-Link IE Controller Network modules
• Disconnect the module that cannot be
recognized.
• Reset the CPU module and run it again. If the
same error code is displayed again, the cause
is a hardware failure of the CPU module, I/O
module, intelligent function module, END cover,
branch module, or extension module. (Please
consult your local Mitsubishi representative,
explaining a detailed description of the
problem.)
• Connect the branch module on the right of the
CPU module or the extension module.
• Connect the branch module on the left of the
END cover.
• Disconnect branch modules other than the first
one.
APPENDICES
LED Status, Corresponding
CPU Status CPU
*15
QnPRH
Q00J/Q00/Q01
QnPH
*18
QnU
QnPRH
RUN:
Off
ERR.:
Flicker
CPU Status:
Stop
LCPU
*28
LCPU
161
A