Mitsubishi MELSEC-Q Series User Manual page 587

18
TROUBLESHOOTING
Error code
In a multiple CPU system, a CPU module incompatible with the
multiple CPU system is mounted.
The I/O module status is different from the I/O module information at
2000
power ON.
(The I/O module mounting status was changed during operation, or
the module is nearly disconnected.)
The slot to which the QI60 is mounted is set to other than Intelli.
(intelligent function module) or Interrupt (interrupt module) in the I/O
assignment of Parameter.
• In the I/O assignment setting of Parameter, Intelli. (intelligent
function module) was allocated to an I/O module or vice versa.
• In the I/O assignment setting of Parameter, a module other than
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CPU (or nothing) was allocated to the location of a CPU module or
vice versa.
• In the I/O assignment setting of Parameter, the set points for an
intelligent function module is less than the number of actual points.
• In the I/O assignment setting of Parameter, switch setting was made
to the module that has no switch setting.
• 2 or more QI60 modules are loaded in a single CPU system.
• 2 or more QI60/A1SI61 (Programmable controller CPU only)
2103
modules are set to the same control CPU in a multiple CPU system.
• 2 or more A1SI61 modules are loaded in a multiple CPU system.
* 2 In the "Error time operation mode" on the <<System setting>> tab of the C Controller setting utility, the CPU operation status after error
occurrence can be set to "Stop" or "Continue". (The LED display also changes according to the setting.)
Error description and cause Corrective action
Replace the CPU module incompatible with the multiple CPU system
with a CPU module compatible with the multiple CPU system.
• Read the error information using the C Controller setting utility,
check the module corresponding to the numerical value (module
No.) reading, and replace it if necessary.
• When a GOT is bus-connected to the main base unit or extension
base unit, check the connection status of the extension cable and
the grounding status of the GOT.
Make setting again to match the PLC parameter I/O assignment with
the actual loading status.
• Make the Parameter's I/O assignment setting again so it is
consistent with the actual status of the intelligent function module
and the CPU module.
• Delete the switch setting in the I/O assignment setting of Parameter.
• Reduce the number of QI60 modules loaded in the single CPU
system to one.
• Change the number of QI60 modules set to the same control CPU
to only one in the multiple CPU system.
• Reduce the number of A1SI61 modules to only one in the multiple
CPU system. When using an interrupt module with each QCPU in a
multiple CPU system, replace it with the QI60. (Use one A1SI61
module + max. three QI60 modules or only the QI60 modules.)
18.3 Actions for Lit/Flashing ERR. LED
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