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Programmable Controllers MELSEC
FAQ within [ Programmable Controllers MELSEC ]
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SNTP communication error in built-in Ethernet port LCPU
The error does not affect the CPU time. The CPU time is not set when a communication error occurs. More Details >>
- No:22783
- Release Date:2018/09/03 17:30
- Category: MELSEC-L Series
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Cable length to connect to built-in Ethernet port in LCPU
The maximum length between a hub and a node is 100 m. The max. length connectable to a hub is 200m.When repeater hubs are used in cascade connection, the max... More Details >>
- No:22781
- Release Date:2018/09/03 17:30
- Category: MELSEC-L Series
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The conversion speed is as follows. - High speed: 20 microseconds per channel- Medium speed: 80 microseconds per channel- Low speed: 1 millisecond per channel More Details >>
- No:22776
- Release Date:2018/09/03 17:30
- Category: MELSEC-L Series
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FNC connector pin layout in L series I/O module and Q series I/O module
Yes. They have the same pin layout. More Details >>
- No:22774
- Release Date:2018/09/03 17:30
- Category: MELSEC-L Series
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The heater disconnection detection function monitors the heater current on the transistor output. If no current flows when the transistor is ON, it is consi... More Details >>
- No:22773
- Release Date:2018/09/03 17:30
- Update:2018/09/22 10:58
- Category: MELSEC-L Series
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PLC write not possible due to memory overload
If comments cannot be stored in the program memory, write them in the standard ROM or a memory card. Calculate the memory capacity in GX Works2 or GX Develop... More Details >>
- No:22767
- Release Date:2018/09/03 17:30
- Category: MELSEC-L Series
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Ethernet system configuration of a redundant system
The following figure shows the basic configuration. When a control system Ethernet module is faulty or disconnected, the system is switched at a disco... More Details >>
- No:22718
- Release Date:2018/09/03 17:29
- Update:2018/09/18 11:45
- Category: MELSEC-Q Series
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Accessible numbers of devices in one message are shown below.- 2000 coils and inputs for reading- 125 input registers and holding registers for reading- 1968... More Details >>
- No:22668
- Release Date:2018/09/03 17:29
- Category: MELSEC-Q Series
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Ethernet communication after the replacement of an external device
Personal computers have different MAC addresses and an Ethernet module hold a MAC address. Hence the MAC address that the Ethernet module currently holds is ... More Details >>
- No:22665
- Release Date:2018/09/03 17:29
- Category: MELSEC-Q Series
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The communication can be established using the following methods. - Using the socket communication function of both CPU modules - Using the simple PLC comm... More Details >>
- No:22664
- Release Date:2018/09/03 17:29
- Update:2018/09/21 13:51
- Category: MELSEC-Q Series
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