FAQ


FAQAbout Products
- FAQ > Controllers > Programmable Controllers MELSEC
FAQ
Keyword Search
Programmable Controllers MELSEC
FAQ within [ Programmable Controllers MELSEC ]
-
Simultaneous broadcast reception setting for built-in Ethernet port LCPU
To receive simultaneous broadcast using UDP, set the parameters as follows. - Destination IP Address: FF.FF.FF.FFh - Destination Port No.: Other than FFFFh (... More Details >>
- No:22772
- Release Date:2018/09/03 17:30
- Category: MELSEC-L Series
-
Simultaneous use of simple PLC communication function and socket communication
The socket communication can be used simultaneously with the simple PLC communication function. More Details >>
- No:22740
- Release Date:2018/09/03 17:29
- Category: MELSEC-L Series
-
LCPU built-in Ethernet port setting when using the simple PLC communication function
The following settings are required for the "Open Setting" for the number of connected external devices.- Protocol: "UDP"- Open System: "MELSOFT connection" More Details >>
- No:22739
- Release Date:2018/09/03 17:29
- Category: MELSEC-L Series
-
Input derating is the percentage of simultaneous ON points, one of the specifications applied when input modules are used. When QX42 is used in a temperatur... More Details >>
- No:22692
- Release Date:2018/09/03 17:29
- Update:2018/10/03 16:23
- Category: MELSEC-Q Series
-
Accessing file registers from the built-in Ethernet port QCPU using A-compatible 1E frames
The QnUDE(H)CPU modules with serial numbers with upper 5 digits of "14112" or later indicate compatibility with the function. The accessible device range is ... More Details >>
- No:22645
- Release Date:2018/09/03 17:29
- Category: MELSEC-Q Series
-
Setting of Q series registers whose data is held when a power failure occurs
Assign data registers (D) to Latch (1) or Latch (2) in the "Device Setting" window ([PLC Parameter] -> "Device Setting" window) to hold the data when a po... More Details >>
- No:22601
- Release Date:2018/09/03 17:29
- Category: MELSEC-Q Series
-
Connect with a straight cable using a hub. For more details, refer to the following manual. - FL-net (OPCN-2) Interface Module User's Manual More Details >>
- No:22574
- Release Date:2018/09/03 17:29
- Update:2018/09/20 16:55
- Category: MELSEC-Q Series
-
Recommended cables for MODBUS(R) interface module QJ71MB91
The RS-232 cable should meet RS-232 standards and not exceed 15 m in length.The RS-422/485 cable should meet specifications described in the following manual... More Details >>
- No:22566
- Release Date:2018/09/03 17:29
- Category: MELSEC-Q Series
-
Using Structured Text in GX Works2 simple projects
Select "Use Label" in the New Project window. More Details >>
- No:22562
- Release Date:2018/09/03 17:29
- Category: MELSEC-Q Series
-
Corrective action when the program size exceeds the capacity
If comments and symbolic information are stored in the program memory, write them in the standard ROM. More Details >>
- No:22560
- Release Date:2018/09/03 17:29
- Category: MELSEC-Q Series
711-720 of Total 1023