The error code "2100" is "SP.UNIT LAY ERR.". This error may be caused by one of the following factors. (1) In the I/O

This function allows data communications between specified devices at the specified timing, using the built-in Ethernet.

The present scan time is stored in D8010. Monitor the value using a programming tool such as GX Works2 and GX Developer.

The station number setting is not required for non-protocol communication.

The Web server function allows you to log in from up to four devices at the same time. You can't log in from the fifth m

The constant scan initial value in the simulation function is 100ms. Thus, the value of SM410(0.1sec. clock) is OFF in e

Select [Tool] -> [Options] -> [Program Editor] -> "Ladder/SFC"-> "Comment" and change "Reference/Reflection

The default receive complete code is CR+LF (0DH, 0AH). The default received data count is 511 words. Hence, at their def

When data is sent from the RS-422/485 interface through RS-485 (2-wire type) communication and the same data comes back

To establish communications between the programmable controller and GX Developer, clear the communication setting. (The

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Programmable Controllers MELSEC

MELSEC iQ-R Series(45)
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FAQ within [ Programmable Controllers MELSEC ]

901-910 of Total 1023

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Error code "2100" in QCPU

The error code "2100" is "SP.UNIT LAY ERR.". This error may be caused by one of the following factors. (1) In the I/O assignment setting of the PLC parame... More Details >>
- No：22650
- Release Date：2018/09/03 17:29
- Update：2018/09/21 11:47
- Category： MELSEC-Q Series
Simple PLC communication function

This function allows data communications between specified devices at the specified timing, using the built-in Ethernet. Device data such as production data ... More Details >>
- No：22737
- Release Date：2018/09/03 17:29
- Category： MELSEC-L Series
How to check the scan time (MELSEC-F series)

The present scan time is stored in D8010. Monitor the valueusing a programming tool such as GX Works2 and GX Developer. More Details >>
- No：24685
- Release Date：2019/02/22 11:40
- Update：2019/02/22 15:07
- Category： MELSEC-F Series , Engineering Software , Main Unit
Station number setting in the "PLC System(2)" tab of PLC Parameter setting on GX Developer when non-protocol communication is performed

The station number setting is not required for non-protocol communication. More Details >>
- No：24948
- Release Date：2019/04/18 14:27
- Category： MELSEC-F Series , Main Unit , Network/Communication
Regarding simultaneous access to Web Server function

The Web server function allows you to log in from up to four devices at the same time. You can't log in from the fifth machine. More Details >>
- No：39330
- Release Date：2023/02/14 09:06
- Category： MELSEC iQ-F Series , CPU Module , Network/Communication
Behavior of special relay in simulation

The constant scan initial value in the simulation function is 100ms. Thus, the value of SM410(0.1sec. clock) is OFF in each scan. To turn ON/OFF SM410, set ... More Details >>
- No：22521
- Release Date：2018/09/03 17:28
- Update：2018/09/20 14:23
- Category： MELSEC-Q Series
Inputting device comments in GX Works2

Select [Tool] -> [Options] -> [Program Editor] -> "Ladder/SFC"-> "Comment" and change "Reference/Reflection Target for Device Comment" from "Glob... More Details >>
- No：22559
- Release Date：2018/09/03 17:29
- Category： MELSEC-Q Series
Reception data read request signal of QJ71C24N not turn ON

The default receive complete code is CR+LF (0DH, 0AH). The default received data count is 511 words. Hence, at their defaults, Reception data read request si... More Details >>
- No：22984
- Release Date：2018/09/03 17:31
- Update：2018/09/25 17:22
- Category： Network related products
Receiving back (echoing back) the same data sent from QJ71C24N

When data is sent from the RS-422/485 interface through RS-485 (2-wire type) communication and the same data comes back to RDA or RDB, we call it echo back. ... More Details >>
- No：23000
- Release Date：2018/09/03 17:31
- Update：2018/09/25 17:44
- Category： Network related products
No communication between a programmable controller and a personal computer (GX Developer) after the communication parameters for the RS-232C communication equipment are set

To establish communications between the programmable controller and GX Developer, clear the communication setting. (The communication setting register value ... More Details >>
- No：24876
- Release Date：2019/04/15 08:07
- Category： MELSEC-F Series , Engineering Software , Main Unit

901-910 of Total 1023

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