The MQTT communication function can be used for up to one connection.

The FX5 CPU unit does not handle double-precision real numbers. Only single-precision real numbers can be handled.

Imports are not supported. Only exports are supported.

In 8-bit mode, the upper 8 bits of transmitted and received data are ignored and only the lower 8 bits are valid data.

FX5-CCLGN-MS allows the master station to change the reserved station setting with parameters, but the setting can not b

When an entry code (2nd entry code) registration is set in the FX3U series, such error can occur.

The external and mounting dimensions of the FX2N-1PG and the FX3U-1PG are identical. However, the electrical specificati

If the OUT instruction using the device number of the latch target device exists in a sequence program, the latched data

The possible causes are as follows. - Incorrect setting with a personal computer or an Ethernet interface module C

Basic arithmetic operations cannot be performed on unsigned words. Please assign the multiplier to a signed (single/doub

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Programmable Controllers MELSEC

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

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Regarding maximum number of connections for MQTT communication function

The MQTT communication function can be used for up to one connection. More Details >>
- No：40055
- Release Date：2023/08/25 08:53
- Category： MELSEC iQ-F Series , Network/Communication
Regarding double-precision real numbers

The FX5 CPU unit does not handle double-precision real numbers. Only single-precision real numbers can be handled. More Details >>
- No：40033
- Release Date：2023/08/24 15:37
- Category： MELSEC iQ-F Series , CPU Module , Engineering Software
Regarding Device Memory Export/Import

Imports are not supported. Only exports are supported. More Details >>
- No：40027
- Release Date：2023/08/24 14:38
- Category： MELSEC iQ-F Series , Engineering Software
Regarding differences between 8 bit and 16 bit modes for non-protocol communication

In 8-bit mode, the upper 8 bits of transmitted and received data are ignored and only the lower 8 bits are valid data. In 16 bit mode, send/receive data i... More Details >>
- No：39363
- Release Date：2023/02/15 13:04
- Category： MELSEC iQ-F Series , CPU Module , Network/Communication
Regarding the change of settings for reserved station (master station) of FX5-CCLGN-MS

FX5-CCLGN-MS allows the master station to change the reserved station setting with parameters, but the setting can not be changed by program. Note that link... More Details >>
- No：39275
- Release Date：2023/01/12 16:46
- Category： MELSEC iQ-F Series , Network/Communication
Connection of FX-20P and FX3U series

Whenan entry code (2nd entry code) registration is set in the FX3U series, sucherror canoccur. More Details >>
- No：24983
- Release Date：2019/04/23 07:21
- Category： MELSEC-F Series , Accessories
Differences in the mounting dimensions and sizes between the pulse output blocks FX2N-1PG and FX3U-1PG

The external and mounting dimensions of the FX2N-1PG and the FX3U-1PG are identical. However, the electrical specifications and connectable FX programmable c... More Details >>
- No：24905
- Release Date：2019/04/15 11:31
- Category： MELSEC-F Series , Positioning Control
Data backup failure

If the OUT instruction using the device number of the latch target device exists in a sequence program, the latched data may be overwritten by execution of t... More Details >>
- No：24783
- Release Date：2019/02/27 16:16
- Category： MELSEC-F Series , Engineering Software , Main Unit
Time out error in the communication test of MX Component

The possible causes are as follows. - Incorrect setting with a personal computer or an Ethernet interface module Check the IP address, network number, sta... More Details >>
- No：22934
- Release Date：2018/09/03 17:30
- Update：2018/09/25 09:49
- Category： Engineering Software
Multiplication in the Structured Text

Basic arithmetic operations cannot be performed on unsigned words. Please assign the multiplier to a signed (single/double) word. More Details >>
- No：22886
- Release Date：2018/09/03 17:30
- Category： Engineering Software

521-530 of Total 1010

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