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Jennifer FitzgeraldSep 18, 2025
What to check if (Gain value) - (Offset value) 0.1 in Mitsubishi I/O Systems?
- WWhitney LutzSep 18, 2025
To address this issue, check the voltage at the thermocouple input terminal.
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Loading...What to check if (Gain value) - (Offset value) 0.1 in Mitsubishi I/O Systems?
To address this issue, check the voltage at the thermocouple input terminal.
What to do if the analog adjustment output in the offset/gain setting mode is outside the specified value range on Mitsubishi MELSEC Q Controller?
Change the contents of offset/gain adjustment value specification so that it is within the range from –3000 to 3000.
What to do if the fuse broken detection occurs in Mitsubishi MELSEC Q?
If the fuse for the coincidence signal external output section has blown in your Mitsubishi Controller, it must be replaced by a qualified technician from the Service Center. Contact your branch office or distributor with a detailed description of the issue.
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".
Why is the RUN LED flashing or off on my Mitsubishi Controller?
The RUN LED might be flashing or turned off if the mode is set to the offset/gain setting mode. Reset switch 4 of the intelligent function module switch setting for GX Developer to the normal mode.
Why is the analog value not within the reference accuracy of the theoretical value on my Mitsubishi MELSEC Q?
If you're using voltage output and observe a small load resistance of the connected external device and a long wiring distance, a voltage drop due to the wiring impedance and load current may be large, and the voltage applied to the external device is low. In this case, the factory default range setting may not satisfy the reference accuracy. Use User range setting and adjust the offset and gain values after wiring.
What should I do if the analog output value is not “HOLD” on my Mitsubishi MELSEC Q Controller?
If the analog output value is not in “HOLD” mode, check the Switch 3 setting of the intelligent function module switch setting on GX Developer. Also, if the Q66DA-G is used on a MELSECNET/H remote I/O station, take action, referring to POINT (2) in Section 3.2.1.
What to do if an invalid value is set in the offset/gain setting on Mitsubishi MELSEC Q?
Perform the offset/gain setting again for the error channel. If the error occurs again, the module may be malfunctioning. Please consult your local Mitsubishi representative, explaining a detailed description of the problem.
How to fix offset value equal to or larger than gain value on Mitsubishi MELSEC Q?
Reset the Mitsubishi Controller so that the offset value is smaller than the gain value.
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) |
