Mitsubishi A Series - 11.3 Troubleshooting OFF

11. TROUBLESHOOTING
MELSEC-A
11.3 Troubleshooting OFF
This section describes basic troubleshooting procedures for the AJ71 C24.
The User's Manuals give information on PC CPU module troubleshooting.
1 1.3.1
TrouMeehooting flow chad
The state of errors is described as follows:
YES ,
SeeSsotion11.3.4whenh2-CM(LEDNo.
16)orCCM(LEDNo.20)istudON.
i
Is communications
pomstimm made and
YES .
see Section I I 3.5 when ths cornrnunm
aonwmm fails.
If only 'NAK' is received, an 'error code' is
theerroccodasinSe4ons11.1 or11.2.
transmitted amding
to the protocol. Check
SeeSection11.3.6whsnundecodeddat.k
transmitted.
I
11 -4
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