Yes, you can use NP1L-RS1/RS4/RS5 for RS-422 devices. RS-485 is upper compatible with RS-422. There are two connection t

It is full duplex for both hardware and software (firmware) for anything other than communication by M_RECEIVE and M_SEN

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

Yes, it is possible. Note that one relay causes attenuation of about 1 dB. The allowable attenuation is 7 dB in total.

It is not possible. Each module comply to following FL-net standards. NP1L-FL1 : FL-netVer1 NP1L-FL2 : FL-netVer2

They are retained. Note, however, that they are cleared if the power of the FL-net module is turned off.

No, they are not synchronized. The configuration flag cannot be used for that application. Use the broadcast area for h

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

Common memory 1 and common memory 2 are handled together in terms of timing. However, to maintain the uniqueness of data

Yes, a CPU is necessary. In the case of a system with no CPU, the input status LED does not work even if signals are ext

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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

≪ 3 / 6page ≫

NP1L-RS1/RS4/RS5 support RS-485. Can I use them for RS-422 devices?

Yes, you can use NP1L-RS1/RS4/RS5 for RS-422 devices. RS-485 is upper compatible with RS-422. There are two connection types for RS-422 devices: 2-wire conne... Show Detail
- No：1522
- Displayed Date：2023/04/25 19:00
With a general-purpose communication module, is RS232C completely full duplex?

It is full duplex for both hardware and software (firmware) for anything other than communication by M_RECEIVE and M_SEND on the SX bus, which are FB interna... Show Detail
- No：1413
- 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
I want to relay the SX bus optical cable. Is it possible?

Yes, it is possible. Note that one relay causes attenuation of about 1 dB. The allowable attenuation is 7 dB in total. Careful consideration is required be... Show Detail
- No：1429
- Displayed Date：2023/04/25 19:00
Can we use an FL-net module (Type_ NP1L-FL1/FL2/FL3) and standard LAN device with same network?

It is not possible. Each module comply to following FL-net standards. NP1L-FL1 : FL-netVer1 NP1L-FL2 : FL-netVer2 NP1L-FL3 : FL-netVer3(Class1) In FL-... Show Detail
- No：1416
- Displayed Date：2023/04/25 19:00
When the communication cable is disconnected with an FL-net module (Type_ NP1L-FL1/FL2/FL3), are the FL-net common memory data retained? Or are the...

They are retained. Note, however, that they are cleared if the power of the FL-net module is turned off. Show Detail
- No：1405
- Displayed Date：2023/04/25 19:00
When the power of P/PE-link is cycled, 0 data is transmitted, which I want to mask with an application. Are the configuration flag and the broadcas...

No, they are not synchronized. The configuration flag cannot be used for that application. Use the broadcast area for handshaking using the application to ... Show Detail
- No：1631
- 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
With the common memory of FL-net, I set word data with common memory 2 and bit data with common memory 1. Please describe the timing of transmissio...

Common memory 1 and common memory 2 are handled together in terms of timing. However, to maintain the uniqueness of data including those in common memory 1 a... Show Detail
- No：1311
- Displayed Date：2023/04/25 19:00
Is a CPU necessary to check I/O? Input signals to the input terminals of an input module are turned ON, however, the input status LED remains OFF.

Yes, a CPU is necessary. In the case of a system with no CPU, the input status LED does not work even if signals are externally input into the input module. Show Detail
- No：1537
- Displayed Date：2023/04/25 19:00