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

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

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

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

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

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

The bus can be extended with the SX bus electrical repeater (Type_ NP2L-RP1). Up to three repeaters can be used in one

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

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

The received data is cleared to 0. Therefore, be sure not to read (ignore) the data by application program. Reopening th

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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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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 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
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
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
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
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
The total extension of the SX bus has exceeded 25 m. Is there anything to relay the connection?

The bus can be extended with the SX bus electrical repeater (Type_ NP2L-RP1). Up to three repeaters can be used in one system. (When three repeaters are us... Show Detail
- No：1550
- 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
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
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...

The received data is cleared to 0. Therefore, be sure not to read (ignore) the data by application program. Reopening the FB (turning the 'OPEN' terminal fro... Show Detail
- No：1672
- Displayed Date：2023/04/25 19:00