Having previously worked with microcontrollers and the following 20 types of PLCs for Modbus RTU serial communication, I am now sharing the correspondence table of these 20 PLC input, output, and register components with their Modbus address numbers.
Mitsubishi
X components support Modbus function code 02;
Y components support Modbus function codes 01, 05, and 15;
D components support Modbus function codes 03, 06, and 16.

Siemens
I components support Modbus function code 02;
Q components support Modbus function codes 01, 05, and 15;
V components support Modbus function codes 03, 06, and 16.

Omron
CIO0 components support Modbus function code 02;
CIO100 components support Modbus function codes 01, 05, and 15;
D components support Modbus function codes 03, 06, and 16.

Panasonic
X components support Modbus function code 02;
Y components support Modbus function codes 01, 05, and 15;
DT components support Modbus function codes 03, 06, and 16.

Delta
X components support Modbus function code 02;
Y components support Modbus function codes 01, 05, and 15;
D components support Modbus function codes 03, 06, and 16.

Xinjie
X components support Modbus function code 02;
Y components support Modbus function codes 01, 05, and 15;
D components support Modbus function codes 03, 06, and 16.

Yonghong
X components support Modbus function code 02;
Y components support Modbus function codes 01, 05, and 15;
D components support Modbus function codes 03, 06, and 16.

Chande
P0 components support Modbus function code 02;
P40 components support Modbus function codes 01, 05, and 15;
D components support Modbus function codes 03, 06, and 16.

Inovance
X components support Modbus function code 02;
Y components support Modbus function codes 01, 05, and 15;
D components support Modbus function codes 03, 06, and 16.

Invertech
X components support Modbus function code 02;
Y components support Modbus function codes 01, 05, and 15;
D components support Modbus function codes 03, 06, and 16.

Keyence
R0 components support Modbus function code 02;
R500 components support Modbus function codes 01, 05, and 15;
DM components support Modbus function codes 03, 06, and 16.

Schneider Electric
After updating the firmware, it supports function codes 01, 02, and 15
I components support Modbus function code 02;
Q components support Modbus function codes 01 and 15;
M components support Modbus function codes 03, 06, and 16.

Haiwei
X components support Modbus function code 02;
Y components support Modbus function codes 01, 05, and 15;
D components support Modbus function codes 03, 06, and 16.

Weikong
X components support Modbus function code 02;
Y components support Modbus function codes 01, 05, and 15;
D components support Modbus function codes 03, 06, and 16.

Holley
I components support Modbus function code 02;
Q components support Modbus function codes 01, 05, and 15;
M components support Modbus function codes 03, 06, and 16.

Tai’an
X components support Modbus function code 02;
Y components support Modbus function codes 01, 05, and 15;
D components support Modbus function codes 03, 06, and 16.

Rockwell
I components support Modbus function code 02;
Q components support Modbus function codes 01, 05, and 15;
N components support Modbus function codes 03, 06, and 16.

Hexion
I components support Modbus function code 02;
Q components support Modbus function codes 01, 05, and 15;
V components support Modbus function codes 03, 06, and 16.

Fuji
(Implemented without protocol programming)
X components support Modbus function code 02;
Y components support Modbus function codes 01 and 15;
D components support Modbus function codes 03 and 16.

Beckhoff
I components support Modbus function code 02;
Q components support Modbus function codes 01, 05, and 15;
V components support Modbus function codes 03, 06, and 16.

Microcontroller
DI components support Modbus function code 02;
DO components support Modbus function codes 01, 05, and 15;
AI components support Modbus function code 04;
AO components support Modbus function codes 03, 06, and 16.

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