Mitsubishi MELSEC User Manual

12
TROUBLESHOOTING
12.2 Troubleshooting Flowchart
12.2.7 Flowchart for when the "ERR." LED turns on or flashes
12 - 13
9
EMC AND LOW VOLTAGE DIRECTIVES
10
LOADING AND INSTALLATION
11
MAINTENANCE AND INSPECTION
12
TROUBLESHOOTING APPENDICES INDEX
(2) Flowchart for when "CONTROL-BUS ERROR" occurs
This flowchart can be confirmed only when a specific slot/base unit can be detected
by the error code.
Figure 12.5 Flowchart for when the "ERR." LED is on/flashing
Error detection
Error detection
Error detection
Normal operation
Normal operation
Normal operation
The "CONTROL-BUS ERROR" has occurred.
Completed
YES
Check the slot or base unit where
the error detected by GX
Developer.
Mount the module properly.
Has the "ERR."
LED turned off?
NO
Is the module
on the corresponding
slot mounted properly?
Mount the module properly.
YES
NO
Replace the
corresponding module.
Replace the CPU
module.
Replace the base unit.
Hardware error
Please consult your local Mitsubishi
service center of representative,
explaining a detailed description of
the problem.
YES
NO
Has noise in
excess of the specified value
been generated?

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)