We recommend you use an unmanaged switch, without B.S protection that is an industrial hub fulfilling the conditions of

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

R_STS = 1 means 'send buffer overflow' detected by the general-purpose communication module. Check the communication for

It is the same as the loader mode (mode switch 3) of the general-purpose communication module (Type_ NP1L-RS1/RS2/RS3/RS

You don't need a dedicated cable. Since the parameters will be set via the CPU module, you need a loader cable for the

The number of M_OPEN FBs that can be opened simultaneously is limited to 56. The number of FBs that can be simultaneousl

Set the port No. as described below. (1) For NP1L-RS2_ Set '0.' (2) For NP1L-RS4_ Set '1.' See the figure below for th

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

Yes, it is possible. Of the parameter setting items of initialization, changes made to specific parameter items (such as

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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) ]

1-10 of Total 53

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Can I use a commercially available hub for FL-net modules?

We recommend you use an unmanaged switch, without B.S protection that is an industrial hub fulfilling the conditions of use for FL-net. * What is 'B.S'?... Show Detail
- No：1465
- Displayed Date：2023/04/25 19:00
- Updated DTM：2023/06/09 13:28
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
When the MODBUS master standard expansion FB _C_modm operates, the receive status becomes R_STS = 1. This is not shown in the receive status list. ...

R_STS = 1 means 'send buffer overflow' detected by the general-purpose communication module. Check the communication format, communication interval and other... Show Detail
- No：1607
- Displayed Date：2023/04/25 19:00
What is the communication protocol for the loader port of the CPU module of the MICREX-SX SPH Series?

It is the same as the loader mode (mode switch 3) of the general-purpose communication module (Type_ NP1L-RS1/RS2/RS3/RS4/RS5). Show Detail
- No：1379
- Displayed Date：2023/04/25 19:00
When I write parameter to LonWorks module (NP1L-LW1) using support tool for a LonWorks (NP4N-LNDF), what is the required cable?

You don't need a dedicated cable. Since the parameters will be set via the CPU module, you need a loader cable for the PLC and the program loader software. Show Detail
- No：1676
- Displayed Date：2023/04/25 19:00
Is there any limitation on the number of M_OPENs to be executed simultaneously? If there is a limitation, what is the maximum number?

The number of M_OPEN FBs that can be opened simultaneously is limited to 56. The number of FBs that can be simultaneously opened for each module depends on t... Show Detail
- No：1435
- Displayed Date：2023/04/25 19:00
For the initial setting of a general-purpose communication module with only one communication port such as NP1L-RS2 and NP1L-RS4, is it correct to ...

Set the port No. as described below. (1) For NP1L-RS2_ Set '0.' (2) For NP1L-RS4_ Set '1.' See the figure below for the setting for each type of genera... Show Detail
- No：1383
- Displayed Date：2023/04/25 19:00
- Updated DTM：2023/06/13 15:45
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
Does the general-purpose communication module support the BSC procedure?

No, it doesn't. Show Detail
- No：1293
- Displayed Date：2023/04/25 19:00
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...

Yes, it is possible. Of the parameter setting items of initialization, changes made to specific parameter items (such as frame detection, code conversion and... Show Detail
- No：1639
- Displayed Date：2023/04/25 19:00