Filter instructions are system FBs. System FBs that can be equalized are limited to_ The last value of the edge detectio

The takt cycle monitoring error is caused by the following factors_ (1) The preset takt cycle value specified in the sys

For an analog input range (1 to 5 V or 4 to 20 mA), a line breakage detection function is provided. An input voltage of

For an alarm contact output of an error of the PLC system, select an arbitrary output module in the system definitions a

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

The amounts of data transmitted or received are not limited as R_WRITE instruction/R_READ instruction but by the capacit

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

If this is caused by a fluctuation in the input temperature, moving average processing shown below may improve the condi

There is a high-capacity battery for SPH300 (Type_ NP8P-BTS). Its battery capacity (approximately 2700 mA) is about 2.7

The specified current value is constant regardless of the frequency because the input impedance for the pulse input I/F

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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 ]

211-220 of Total 235

≪ 22 / 24page ≫

I want to equalize filter instructions in a redundant system.

Filter instructions are system FBs. System FBs that can be equalized are limited to_ The last value of the edge detection FB, present counter value of the co... Show Detail
- No：1563
- Displayed Date：2023/04/25 19:00
- Category： Application
A nonfatal fault of the takt cycle monitoring error has occurred. What is a possible cause?

The takt cycle monitoring error is caused by the following factors_ (1) The preset takt cycle value specified in the system definition is shorter than the ac... Show Detail
- No：1576
- Displayed Date：2023/04/25 19:00
- Category： Error
I understand that an analog input module (Type_ NP1AXH4-MR, etc.) has a signal line breakage detection function. How does it work?

For an analog input range (1 to 5 V or 4 to 20 mA), a line breakage detection function is provided. An input voltage of 0.92 V or lower for the 1 to 5 V ran... Show Detail
- No：1316
- Displayed Date：2023/04/25 19:00
- Category： I/O
Is there an alarm output contact to use when an error occurs in the PLC system?

For an alarm contact output of an error of the PLC system, select an arbitrary output module in the system definitions and define its 0th bit as a 'system DO... Show Detail
- No：1347
- Displayed Date：2023/04/25 19:00
- Category： Main unit
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
- Category： Communication (Others)
I want to read and write memory blocks with loader commands by using Ethernet to connect between SX. Is there any limitation to the amounts of data...

The amounts of data transmitted or received are not limited as R_WRITE instruction/R_READ instruction but by the capacity of the memory from/to which data ar... Show Detail
- No：1324
- Displayed Date：2023/04/25 19:00
- Category： Communication (Ethernet)
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
- Category： Communication (Others)
The temperature measurement value of the resistance temperature sensor (PT input) is unstable.

If this is caused by a fluctuation in the input temperature, moving average processing shown below may improve the condition. 1) Change the digital filter v... Show Detail
- No：1586
- Displayed Date：2023/04/25 19:00
- Updated DTM：2023/06/09 13:56
- Category： I/O
Is there a battery available with a longer backup time than the backup battery for SPH (Type_ NP8P-BT)?

There is a high-capacity battery for SPH300 (Type_ NP8P-BTS). Its battery capacity (approximately 2700 mA) is about 2.7 times that of the backup battery supp... Show Detail
- No：1360
- Displayed Date：2023/04/25 19:00
- Category： Accessory
I heard that the high-speed counter module (Type_ NP1F-HC2) requires a current value less than 40 mA for frequencies up to 50 kHz.

The specified current value is constant regardless of the frequency because the input impedance for the pulse input I/F is fixed. Show Detail
- No：1571
- Displayed Date：2023/04/25 19:00
- Category： Function