Mitsubishi MELSEC User Manual

12
TROUBLESHOOTING
12.2 Troubleshooting Flowchart
12.2.7 Flowchart for when the "ERR." LED turns on or flashes
12 - 11
9
EMC AND LOW VOLTAGE DIRECTIVES
10
LOADING AND INSTALLATION
11
MAINTENANCE AND INSPECTION
12
TROUBLESHOOTING APPENDICES INDEX
12.2.7 Flowchart for when the "ERR." LED turns on or flashes
The following shows the flowchart for when the "ERR." LED of the CPU module turns on or
flashes at of the programmable controller power-on, at operation start or during operation.
(1) Flowchart for when "MODULE
VERIFY ERROR" occurs
(2) Flowchart for when
"CONTROL-BUS ERROR"
occurs
The "ERR." LED is on/flashing.
Completed
Confirm details of the error by GX
Developer. (Perform PLC diagnostics.)
NO
Can PLC diagnostics be
performed?
YES
Set the RUN/STOP/RESET switch
to STOP.
Is "UNIT MODULE ERROR"
occurring?
NO
Is "CONTROL-BUS
ERROR" occurring?
Modify error details according to
PLC diagnostics.
NO
Reset the CPU module by the
RUN/STOP/RESET switch.
Set the RUN/STOP/RESET switch
to RUN.
Does the "ERR."
LED turn off?
YES
NO
YES
YES

Mitsubishi MELSEC Specifications

General

Category	Programmable Logic Controller (PLC)
Manufacturer	Mitsubishi Electric
Series	MELSEC
Programming Languages	Ladder Diagram (LD), Function Block Diagram (FBD), Structured Text (ST), Instruction List (IL), Sequential Function Chart (SFC)
Communication Protocols	Ethernet, CC-Link, RS-232, RS-485, USB, Profibus, Modbus
Model Series	FX, Q, L, iQ-R, iQ-F
Input Voltage	100-240V AC, 24V DC (varies by model)
Memory Capacity	Varies widely depending on the CPU module and series. Ranges from kilobytes to megabytes.
I/O Points	16 to 8192 points (varies by model)
Communication Ports	Ethernet, RS-232, RS-485, USB (varies by model)
Programming Software	GX Works2, GX Works3, GX Developer
Operating Temperature	0°C to 55°C
Storage Temperature	-25°C to 75°C
Humidity	5% to 95% (non-condensing)
Vibration Resistance	10 to 57Hz, 0.075mm amplitude; 57 to 150Hz, 9.8m/s² acceleration
Shock Resistance	147m/s², 3 times in each direction (X, Y, Z)
Protection Class	IP20 (varies by model)
CPU Processing Speed	0.02μs to 0.1μs per instruction (varies by model)