Mitsubishi Electric Q26UD(E)HCPU User Manual page 345

Error
Error and cause
code
[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
[SYSTEM LAY ERR.]
• The number of modules connected in the main
block exceeds 10.
• The number of modules connected in the
extension blocks exceeds 11.
2173
■Collateral information
• Common information: Module No. (Block No.)
• Individual information: -
■Diagnostic timing
• At power-on/At reset
[SYSTEM LAY ERR.]
The number of extension blocks exceeds 3.
■Collateral information
• Common information: Module No. (Block No.)
• Individual information: -
■Diagnostic timing
• At power-on/At reset
2174
[SYSTEM LAY ERR.]
The number of extension blocks exceeds 2.
■Collateral information
• Common information: Module No. (Block No.)
• Individual information: -
■Diagnostic timing
• At power-on/At reset
Corrective action
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.
• 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.
• Reduce the number of modules connected
in the main block to 10 or less.
• Reduce the number of modules connected
in the extension blocks to 11 or less.
Reduce the number of extension blocks to 3
or less.
Reduce the number of extension blocks to 2
or less.
APPENDICES
LED status, Corresponding
CPU status CPU
RUN: Off
ERR.:Flashing
QnPRH
CPU Status:Stop
RUN: Off
ERR.:Flashing
LCPU
CPU Status:Stop
RUN: Off
ERR.:Flashing
LCPU
CPU Status:Stop
RUN: Off
ERR.:Flashing
LCPU
CPU Status:Stop
RUN: Off
ERR.:Flashing
LCPU
CPU Status:Stop
L06CPU
L06CPU-P
L26CPU
L26CPU-P
L26CPU-BT
RUN: Off
L26CPU-PBT
ERR.:Flashing
CPU Status:Stop
L02SCPU
L02SCPU-P
L02CPU
L02CPU-P
A
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