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WAGO-I/O-SYSTEM 750
Table of Contents
7
750-871 ETHERNET TCP/IP 2-port Controller
Manual
Version 1.3.0
Description of the MODBUS Functions .......................................... 238
Function Code FC1 (Read Coils) ................................................ 239
Function Code FC2 (Read Discrete Inputs) ................................. 241
Function Code FC3 (Read Multiple Registers) ........................... 243
Function Code FC4 (Read Input Registers) ................................. 244
Function Code FC5 (Write Coil) ................................................. 245
Function Code FC6 (Write Single Register) ............................... 246
Function Code FC11 (Get Comm Event Counter) ...................... 247
Function Code FC15 (Write Multiple Coils) ............................... 248
Function Code FC16 (Write Multiple Registers) ........................ 250
Function Code FC22 (Mask Write Register) ............................... 251
Function Code FC23 (Read/Write Multiple Registers) ............... 252
MODBUS Register Mapping ........................................................... 254
MODBUS Registers ......................................................................... 257
Accessing Register Values .......................................................... 259
Watchdog Registers ..................................................................... 259
Diagnostic Registers .................................................................... 265
Configuration Registers ............................................................... 266
Firmware Information Registers .................................................. 271
Constant Registers ....................................................................... 273
EtherNet/IP (Ethernet/Industrial Protocol) ........................................... 275
Protocol overview in the OSI model ................................................ 276
Characteristics of the EtherNet/IP Protocol Software ...................... 277
Class Overview ............................................................................ 279
Explanation of the Table Headings in the Object Descriptions ... 281
) ............................................................................ 281
) ............................................................... 283
) ............................................................. 284
) ........................................................................ 288
) ............................................................. 290
)................................................................... 291
Coupler/Controller Configuration (64
) ................................... 297
) ......................................................... 300
Discrete Input Point Extended 1 (69
)...................................... 300
Discrete Input Point Extended 2 (6D
) ..................................... 301
Discrete Input Point Extended 3 (71
)...................................... 302
) ...................................................... 302
Discrete Output Point Extended 1 (6A
) .................................. 303
Discrete Output Point Extended 2 (6E
) .................................. 304
Discrete Output Point Extended 3 (72
) ................................... 304
) .......................................................... 305
Analog Input Point Extended 1 (6B
) ...................................... 306
Analog Input Point Extended 2 (6F
) ....................................... 306
Analog Input Point Extended 3 (73
) ....................................... 307
) ....................................................... 308
Analog Output Point Extended 1 (6C