How to resolve contradictory process alarm upper/lower limit value settings in Mitsubishi I/O Systems?
To resolve contradictory process alarm upper/lower limit values, reset the process alarm upper/lower limit value (Un\ G94 to Un\G125).
How to fix rate alarm warning detection period issues in Mitsubishi I/O Systems?
To correct the rate alarm warning detection period, reset it to within the range of 1 to 6000 times.
What to do when the channel change request is turned ON with incorrect settings in Mitsubishi I/O Systems?
• Check the measurement range and reset the offset/ gain temperature setting value (Un\G28 to Un\G43) within the range. • Check wire disconnection or specify the channel for conversion enable.
How do I check for wire disconnection in Mitsubishi I/O Systems?
Check Disconnection detection signal (XC) (Q68TD-G-H02 only) and Disconnection state monitor signal (XC) (Q68TD-G-H01 only) and take the action given in Section 8.2.7.
Why is the RUN LED turned off on my Mitsubishi MELSEC Q?
The RUN LED on your Mitsubishi Controller might be off due to several reasons: - There may be no power being supplied. Confirm that the supply voltage for the power supply module is within the rated range. - The capacity of the power supply module may be inadequate. Calculate the current consumption of the CPU module, I/O module, and intelligent function module mounted on the base unit to see if the power supply capacity is adequate. - A watchdog timer error may have occurred. Reset the programmable controller CPU and verify that it is lit. If the RUN LED does not light even after doing this, the module may be malfunctioning. Please consult your local Mitsubishi representative, explaining a detailed description. - The module may not be correctly mounted on the base unit. Check the mounti...
What to do if an analog output value is not output on a Mitsubishi MELSEC Q Controller?
If your Mitsubishi Controller is not outputting an analog value, consider the following: - Ensure 24VDC is being supplied from the external power supply by verifying that 24VDC voltage is being supplied to the external power supply terminals. - Check for any faults with the analog signal lines, such as broken or disconnected lines, through visual and continuity checks. - Confirm the CPU module is in RUN status. If it's in STOP status, set it to RUN. - Verify that the offset/gain settings are correct. If the user range setting is being used, switch to a different default input range and check if D/A conversion is correctly performed. If it is correctly performed, redo the offset/gain settings. - Verify the setting range in GX Developer monitor. If the output range setting is incorrect, red...
How do I resolve the issue of a specified digital value being outside the range on my Mitsubishi MELSEC Q Controller?
Set a value that is within the range.
Why am I getting an overflow error on my Mitsubishi Controller?
An overflow error in your Mitsubishi Controller can occur if: 1) When a linear counter is in use, an add pulse is input beyond the current value of 2147483647. 2) When a linear counter is in use, a subtract pulse is input below the current value of -2147483647. To resolve this, preset the controller to clear the overflow error.
What to do if the input signal is not turned OFF on my Mitsubishi MELSEC Q?
If the input signal on your Mitsubishi Controller isn't turning OFF, it could be due to leakage current from the input switch. To resolve this, connect an appropriate resistor to lower the voltage across the input module terminals below the OFF voltage value. For AC input, it's recommended to use a CR constant with 0.1 to 47 F + 47 to 120 (1/2W). Another cause might be a limit switch with a neon lamp, in which case you can apply the same resistor solution or create an independent display circuit. Finally, leakage current from the wiring cable's line capacity could be the issue. The same resistor fix applies here, but note that leakage current isn't generated when the power supply is located on the input equipment side.
Why is the ERR LED on or flashing on my Mitsubishi Controller?
The ERR LED on your Mitsubishi Controller may be lit or flashing because: - An error is being generated. Confirm the error code and take corrective action described in Section 8.1. - Intelligent function module setting switch 5 is set to "other than 0". Using GX Developer parameter setting, set intelligent function module setting switch 5 to "0".
General| Series | MELSEC Q Series |
|---|---|
| Type | Modular PLC |
| Programming Software | GX Works2, GX Works3 |
| Category | Programmable Logic Controller (PLC) |
| I/O Modules | Digital I/O, Analog I/O, High-Speed Counter, Positioning |
| Communication | Ethernet, CC-Link |
| Programming Languages | Ladder Logic, Structured Text, Function Block Diagram, Sequential Function Chart, Instruction List |
| Memory | Flash Memory |
| I/O Points | Up to 4096 points (expandable with additional modules) |
| Power Supply | AC or DC power supply options available, depending on the base unit and modules. |
| Mounting | DIN rail mounting |
| Operating Temperature | 0°C to 55°C |
| Storage Temperature | -25°C to 75°C |
| Humidity | 5% to 95% (non-condensing) |
| Vibration Resistance | 10 to 57 Hz, 0.075mm amplitude |
| Weight | Varies depending on the module, from a few grams to several kilograms. |
| Shock Resistance | 147 m/s² (3 times each in X, Y, Z directions) |
Describes the features of the C Controller module, including VxWorks, standard ROM, large data storage, and I/O control capabilities.
Explains device configuration, development environment connection, and system configuration overview for C Controller systems.
Details the base units, extension cables, power supply modules, and other components used with the C Controller module.
Provides the general specifications of the C Controller module, including operating ambient temperature, humidity, vibration, and shock resistance.
Lists the functions of the C Controller module, such as I/O module access, remote operation, and self-diagnostic functions.
Explains critical handling precautions for the C Controller module, including environment, installation, and connection safety.
Explains how base units and slots relate to I/O number assignment for the C Controller module.
Explains user memories (Standard ROM, Work RAM, Battery-backed-up RAM, CompactFlash) and system memory.
Details the product requirements for the development environment, including personal computer specifications and operating system.
Explains common operations for utilities, including starting, exiting, setting connection targets, and displaying help screens.
Outlines bus interface functions and MELSEC data link functions supplied with SW PVC-CCPU for accessing modules and CPUs.
Defines the multiple CPU system concept, explaining how multiple CPU modules work together for enhanced performance.
Explains system configuration for multiple CPU systems, including device compatibility and connection methods.
Details the mounting positions of CPU modules (C Controller, Basic QCPU, High Performance QCPU, Motion CPU) in a multiple CPU system.
Explains data communication methods using MELSEC data link functions between CPU modules, including auto refresh and shared memory.
Lists parameters required for multiple CPU system operation, highlighting setup necessity and consistency checks in the C Controller setting utility.
Provides specific precautions for using AnS series modules, including applicable I/O and special function modules and control CPU settings.
Provides fundamental steps for troubleshooting, including visual checks, fault verification, and narrowing down the error cause.
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