One possible cause is that common FB _C_COM is not registered with the library. For communication-related expansion FBs

RS-485 is upper compatible with RS-422. In general, RS-422 devices mainly use 4-wire connection method, while RS-485 dev

The SX-Programmer Expert supports MODBUS communication (master function) using an FB. Communication with a MODBUS slave

The existing MICREX-F program does not need any modification.

Use an optical fiber cable (Type 2-C-LAP) provided by Sumitomo Electric Industries, Ltd.

You can access the memory from a PC by setting the general-purpose communication module (Type_ NP1L-RS2) to 'Loader' mod

Refreshing data in the link data area in FL-net takes place when data is received from another station. The local statio

Unfortunately, information in a device connected to the master module cannot be read even by building a user application

In MICREX-SX, a scan list is automatically created by registering the remote I/O to be connected to the master module in

It enables reception only when CD (Carrier Detection) is ON. (Other operations are the same as those in the DTE mode.)

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GLOBAL > PLC > SPH > Communication (Others)

Latest FAQ

When I write parameter to LonWorks module (NP1L-LW1) using support tool for a LonWorks (NP4N-LNDF), what is the required cable?
When using a communication module (NP1L-RS1/RS2/RS3/RS4/RS), the FB outputs R_STS 'C0' (Hardware error detected) during receiving. In this case, ho...
I use DeviceNet interface module (NP1L-RD1) under DeviceNet master (NP1L-DN1). How can I specify NP1L-RD1 in the system definition?
In the communication module (NP1L-RS1/RS2/RS3/RS4/RS5), is it possible to change communication parameter such as fixed length to variable length af...
With the FL-net module (NP1L-FL1/FL2/FL3), is there any way to confirm that the data sent from the node-A have actually been received by the node-B?

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FAQ within [ Communication (Others) ]

21-30 of Total 53

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With D300win, I used a non-procedural FB (_C_free) in a program for compilation and an error occurred. What is the cause of this problem?

One possible cause is that common FB _C_COM is not registered with the library. For communication-related expansion FBs including _C_FREE, register common... Show Detail
- No：1329
- Displayed Date：2023/04/25 19:00
- Updated DTM：2023/06/13 15:32
What is the difference between RS-485 and RS-422 ?

RS-485 is upper compatible with RS-422. In general, RS-422 devices mainly use 4-wire connection method, while RS-485 devices mainly use 2-wire connection met... Show Detail
- No：1521
- Displayed Date：2023/04/25 19:00
Does an RS-485 communication module (Type_ NP1L-RS1/RS4/RS5, etc.) support the MODBUS procedure?

The SX-Programmer Expert supports MODBUS communication (master function) using an FB. Communication with a MODBUS slave device is possible by using SPH_CP... Show Detail
- No：1380
- Displayed Date：2023/04/25 19:00
- Updated DTM：2023/06/13 15:45
An existing P-link system is composed of MICREX-F. If part of it is replaced with P-link of MICREX-SX, does the existing MICREX-F program need to b...

The existing MICREX-F program does not need any modification. Show Detail
- No：1319
- Displayed Date：2023/04/25 19:00
Which optical fiber cable for an SX bus should I choose for outdoor use?

Use an optical fiber cable (Type 2-C-LAP) provided by Sumitomo Electric Industries, Ltd. Show Detail
- No：1315
- Displayed Date：2023/04/25 19:00
I want to access the data memory in the MICREX-SX CPU from a PC via the RS-232C port of the general-purpose communication module. (Data read/write)

You can access the memory from a PC by setting the general-purpose communication module (Type_ NP1L-RS2) to 'Loader' mode. Various loader commands have been... Show Detail
- No：1615
- Displayed Date：2023/04/25 19:00
Which FL-net unit is responsible for refreshing data of the common memory with FL-net modules (Type_ NP1L-FL1/FL2/FL3)? Where is the master station?

Refreshing data in the link data area in FL-net takes place when data is received from another station. The local station data is refreshed by sending the la... Show Detail
- No：1424
- Displayed Date：2023/04/25 19:00
Is there any way to check the vendor ID, product code, product revision, serial No., etc. of the slave from the DeviceNet master module (Type_ NP1L...

Unfortunately, information in a device connected to the master module cannot be read even by building a user application. Please use the dedicated configura... Show Detail
- No：1387
- Displayed Date：2023/04/25 19:00
With the DeviceNet master module (Type_ NP1L-DN1), how can I create a scan list and register it with the master module?

In MICREX-SX, a scan list is automatically created by registering the remote I/O to be connected to the master module in the system configuration definitions... Show Detail
- No：1346
- Displayed Date：2023/04/25 19:00
- Updated DTM：2023/06/13 15:35
What will the operation be when the general-purpose communication parameter 8 of the non-procedure standard expansion FB for communication _Cfr* is...

It enables reception only when CD (Carrier Detection) is ON. (Other operations are the same as those in the DTE mode.) Show Detail
- No：1598
- Displayed Date：2023/04/25 19:00

21-30 of Total 53

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