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Anonymous users2024-02-06The first PWR: is the meaning of power supply;
The second run: is the PLC operation indicator;
The third err: is the application execution indicator;
The 4th stat: is the system bit control of the user or application; It is rarely used.
The 5th BAT: is the PLC external battery indication;
The 6th COM: is the PLC communication port communication indication.
This PLC should be TWDLCAA40DRF determined by the PLC state from this time, and this PLC internal program is not running.
run indicates that the PLC is running; ERR indicates a CPU or system failure; i o indicates that the input and output modules are wrong or misconfigured; You need to know which series of PLC is specific to know what other lights are there.
AO module: active, 4 channel indicator light green light is always on, if F red light is always on, then it means that there is currently a channel is not in use, if the channel red light is on, it means that the front road of this pass judgment is not used or there is no current voltage signal output; The red light and the red light of the channel do not indicate that the module is faulty.
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Anonymous users2024-02-05Generally, this indication is on the output leakage lead module, which means that the external power supply of the module is not connected, and the common terminal is not connected.
Connect to an external power supply with a short circuit.
CP can be used for networking, such as large DCS, because some modules have their own DP ports, CP modules can be used. An inverter can be connected.
The IM module is used to connect the expansion rack, for example, 10 IO modules are needed, but the No. 0 rack can only be installed with 8, and the remaining two will be installed on the No. 1, and the IM module will be installed on the two racks.
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Anonymous users2024-02-04The communication between the PLC and the host computer is faulty. Check whether the communication interfaces are well linked.
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Anonymous users2024-02-03The first PWR: is the meaning of power supply;
The second run: is the PLC operation refers to the callback;
The third err: is the application execution indicator;
The fourth stat: is the system bit control of the user or answering program; It is rarely used.
The 5th BAT: is the PLC external battery indication;
The 6th COM: is the PLC communication port communication indication.
Your PLC should be TWDLCAA40DRF from this PLC state decision, this PLC internal program is not running.
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Anonymous users2024-02-02Power runs.
CPU error.
Didn't understand the battery failure.
Serial port working.
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Anonymous users2024-02-011.Fault symptom: The ERR light is always on when the PLC is powered on, and the PLC is not working.
2.Cause of failure:
2) Internal MPU and memory damage due to electromagnetic interference, noise interference, static electricity, etc.
3.Notes:
1) Pay attention to product protection on site to avoid water, oil or acidic liquid being inside the product, resulting in corrosion damage.
2) The communication line and the signal line use shielded cables and are connected reliably.
3) The communication line and signal line should be routed separately from the high-current power cable.
4) The PLC should be installed in isolation from high-power or high-frequency equipment.
5) AC220V power supply can be added with isolation transformer at the input end; DC24V power supply, please make sure that the input power supply of the switching power supply is not co-ground with the power supply of the high-power equipment.
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Anonymous users2024-01-31Hero,How did you solve it later?,I've encountered this problem now.,Re-fill the OS and then re-fill the program.,PLC runs for 2 days and then suddenly CPU err.,Point the reset button on the CPU 2 times to start running again.,But it's err again in less than a few minutes.,This problem has been done for half a month.,Still can't be solved.,Is it that the CPU is broken?
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Anonymous users2024-01-30When the err is always on, the processor is wrong or the system is wrong.
err flashing:
x bus error.
Memory card error.
The PLC is down or the software is faulty.
The PLC is not configured, the program is missing, errors, or incompatible.
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Anonymous users2024-01-29Memory card error.
The PLC is down or the software is faulty.
The PLC is not configured, the program is missing, error, or incompatible.
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Anonymous users2024-01-281. After powering on, the error light flashes, and the RUN light does not light up. run to the running state. Or flashing can see if there is a problem with the next Cheng jujube Ming order, if the program is fine. That is, there is a problem with the IO module.
2. There are generally many reasons why the error light is on, such as IO card damage, communication failure, data overflow, stool macro to zero, and so on. The IM module is installed on the two racks, and the two racks do not belong to the network, but are just an extension of the No. 0 rack, so it is different from the CP module.
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