The LG terminal is a line filter ground terminal in the power supply module. It is intended for guiding any external noi

In exponentiation operation, when a negative value is used for the base, the result is 0.

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

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

It is possible with the Ethernet module software version V36 or later by using the F_READ (read)/F_WRITE (write) FB. Af

To enable the 'output value reference input,' the output module must be actually mounted. If the output module is set as

All the channels in the high-speed output module are set to the general purpose output mode (normal digital output) by d

(1) Standard CPU_ Access takes place when tasks end (synchronized with tasks). (2) High-performance CPU_ Access takes p

The SX does not allow the use of a single SPORT_NO (range_ 1 to 127) for multiple connections simultaneously. When you w

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GLOBAL > PLC > SPH

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 I set the high-speed counter module (NP1F-HC2) to the preset operation mode of the multi-functional counter FB, the preset is disabled in the ...
Are there any restrictions on the mounting position of the I/O modules and communication modules on the base? I'd like to place the communication m...
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...
When I attempted to download a project to a CPU with user ROM card by using D300win, a message appeared saying 'Invalid loader command process!' an...

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FAQ within [ SPH ]

1-10 of Total 235

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What is the difference between the LG and FG terminals of the power supply module (Type_ NP1S-22)?

The LG terminal is a line filter ground terminal in the power supply module. It is intended for guiding any external noise produced in the power supply or sw... Show Detail
- No：1374
- Displayed Date：2023/04/25 19:00
- Updated DTM：2023/06/09 10:52
- Category： Main unit
In ST language, when I use a negative value for the base of exponentiation (such as -2.0**4.0), the calculation result is different from the case w...

In exponentiation operation, when a negative value is used for the base, the result is 0. Show Detail
- No：1551
- Displayed Date：2023/04/25 19:00
- Category： Application
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
- Category： Communication (Others)
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
- Category： Communication (Others)
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
- Category： Communication (Others)
Is it possible to read and write the IP address and port reference number of an Ethernet module (Type_ NP1L-ET1) by using a user application?

It is possible with the Ethernet module software version V36 or later by using the F_READ (read)/F_WRITE (write) FB. After writing, the power (or reset) o... Show Detail
- No：1370
- Displayed Date：2023/04/25 19:00
- Updated DTM：2023/06/13 15:42
- Category： Communication (Ethernet)
In a multi-CPU system, I set the 'Output reference input' of the I/O group registration but the variable (contact) specified for the output referen...

To enable the 'output value reference input,' the output module must be actually mounted. If the output module is set as 'unimplemented' in the system config... Show Detail
- No：1637
- Displayed Date：2023/04/25 19:00
- Category： Application
How do I perform pulse output with the high-speed output module (Type_NP1Y32T09P1-A)?

All the channels in the high-speed output module are set to the general purpose output mode (normal digital output) by default. To use the module in the pul... Show Detail
- No：1613
- Displayed Date：2023/04/25 19:00
- Updated DTM：2023/06/09 13:59
- Category： Function
I use an Ethernet module (Type_ NP1L-ET1/ET2) to read/write data from/to a PC in the loader command communication mode. At what time are data read ...

(1) Standard CPU_ Access takes place when tasks end (synchronized with tasks). (2) High-performance CPU_ Access takes place when a request is generated rega... Show Detail
- No：1300
- Displayed Date：2023/04/25 19:00
- Category： Communication (Ethernet)
When I use the Ethernet module (NP1L-ET1), can I use a same message port No. (SPORT_NO) to establish multiple connections (use multiple M_OPEN)?

The SX does not allow the use of a single SPORT_NO (range_ 1 to 127) for multiple connections simultaneously. When you want to connect multiple ports, use a ... Show Detail
- No：1668
- Displayed Date：2023/04/25 19:00
- Category： Communication (Ethernet)