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I have previously worked on microcontroller and Modbus RTU serial communication for the following 20 types of PLCs. Here, I share the mapping of these PLC input, output, and register components to their corresponding Modbus address.
Mitsubishi FX3G-40MR/ES-A, Siemens S7-200 CPU226 AC/DC/RLY, Omron CP1H-X40DR-A, Panasonic AFPX-C40R, Delta DVP-12SA2, Xinjie XC5-48, Yonghong FBs-40MC, Chandean XBC-DR40S, Inovance H2u-2416MT-XP, Inovance IVC2H-1616MAT6, Keyence KV-N40AR, Schneider Electric TM218LDAE40DRPHN, Haiwei H40S2R series, Weikong LX3V1212MT series, Holley LE5109, Taian AP-340BR-A, Rockwell 1766-L32BWA, Hengxin CTH200 series CPU H226L, Fuji SPE NW0P40R-31, Beckhoff K508-40AR
Mitsubishi
X components support Modbus function code 02; Y components support Modbus function codes 01, 05, 15; D components support Modbus function codes 03, 06, 16.
Siemens
I components support Modbus function code 02; Q components support Modbus function codes 01, 05, 15; V components support Modbus function codes 03, 06, 16.
Omron
CIO0 components support Modbus function code 02; CIO100 components support Modbus function codes 01, 05, 15; D components support Modbus function codes 03, 06, 16.
Panasonic
X components support Modbus function code 02; Y components support Modbus function codes 01, 05, 15; DT components support Modbus function codes 03, 06, 16.
Delta
X components support Modbus function code 02; Y components support Modbus function codes 01, 05, 15; D components support Modbus function codes 03, 06, 16.
Xinjie
X components support Modbus function code 02; Y components support Modbus function codes 01, 05, 15; D components support Modbus function codes 03, 06, 16.
Yonghong
X components support Modbus function code 02; Y components support Modbus function codes 01, 05, 15; D components support Modbus function codes 03, 06, 16.
Chandean
P0 components support Modbus function code 02; P40 components support Modbus function codes 01, 05, 15; D components support Modbus function codes 03, 06, 16.
Inovance
X components support Modbus function code 02; Y components support Modbus function codes 01, 05, 15; D components support Modbus function codes 03, 06, 16.
Inovance
X components support Modbus function code 02; Y components support Modbus function codes 01, 05, 15; D components support Modbus function codes 03, 06, 16.
Keyence
R0 components support Modbus function code 02; R500 components support Modbus function codes 01, 05, 15; DM components support Modbus function codes 03, 06, 16.
Schneider Electric
After firmware update, supports function codes 01, 02, 15
I components support Modbus function code 02; Q components support Modbus function codes 01, 15; M components support Modbus function codes 03, 06, 16.
Haiwei
X components support Modbus function code 02; Y components support Modbus function codes 01, 05, 15; D components support Modbus function codes 03, 06, 16.
Weikong
X components support Modbus function code 02; Y components support Modbus function codes 01, 05, 15; D components support Modbus function codes 03, 06, 16.
Holley
I components support Modbus function code 02;
Q components support Modbus function codes 01, 05, 15; M components support Modbus function codes 03, 06, 16.
Taian
X components support Modbus function code 02; Y components support Modbus function codes 01, 05, 15; D components support Modbus function codes 03, 06, 16.
Rockwell
I components support Modbus function code 02;
Q components support Modbus function codes 01, 05, 15; N components support Modbus function codes 03, 06, 16.
Hengxin
I components support Modbus function code 02; Q components support Modbus function codes 01, 05, 15; V components support Modbus function codes 03, 06, 16.
Fuji
(Implemented without protocol programming)
X components support Modbus function code 02; Y components support Modbus function codes 01, 15; D components support Modbus function codes 03, 16.
Beckhoff
I components support Modbus function code 02;
Q components support Modbus function codes 01, 05, 15; V components support Modbus function codes 03, 06, 16.
End
Source: China Industrial Control Network, Industrial Control Forum
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