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

A 'client' is a device that collects data. Since the PLC is a device from which data is collected, there is no OPC clien

The LEDs of the P-link module (Type_ NP1L-PL1) are designed to blink quickly in accordance with the ON/OFF of a signal.

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

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

When the common memory system is used, this can be achieved by handshaking with an application using part of the link me

When connected via 10BASE-T, you can replace it. There is no need to change the system definition. Before replacement, s

Selecting the DCE mode for the communication parameter_ DCE designation keeps DSR always on.

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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
There is an OPC server that supports the MICREX-SX (communication middleware, Type_ NP4N-MDLW). Is there an OPC client?

A 'client' is a device that collects data. Since the PLC is a device from which data is collected, there is no OPC client. Show Detail
- No：1553
- Displayed Date：2023/04/25 19:00
The 'SND' and 'RCV' LEDs on the P-link module (Type_ NP1L-PL1) look dark. Is this a fault?

The LEDs of the P-link module (Type_ NP1L-PL1) are designed to blink quickly in accordance with the ON/OFF of a signal. Although they look dim to the human e... Show Detail
- No：1624
- 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
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
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?

When the common memory system is used, this can be achieved by handshaking with an application using part of the link memory. Without handshaking, it is not... Show Detail
- No：1638
- Displayed Date：2023/04/25 19:00
Can I use both P-link and PE-link in one system?

No, you cannot. Show Detail
- No：1523
- Displayed Date：2023/04/25 19:00
Can I replace NP1L-FL2 with NP1L-FL3 for FL-net communication?

When connected via 10BASE-T, you can replace it. There is no need to change the system definition. Before replacement, set the switches on the front of the N... Show Detail
- No：1524
- Displayed Date：2023/04/25 19:00
When does the port status_ DSR (data set ready) in a structure variable_ RAS of the non-procedural standard expansion FB for communication remain on?

Selecting the DCE mode for the communication parameter_ DCE designation keeps DSR always on. Show Detail
- No：1297
- Displayed Date：2023/04/25 19:00