WAGO 750-341, Руководство пользователя

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132 • MODBUS Functions
MODBUS Register Mapping
WAGO-I/O-SYSTEM 750
ETHERNET TCP/IP
4.2.4 MODBUS Register Mapping
The following tables display the MODBUS addressing and the corresponding
IEC61131 addressing for the process image and the internal variables is
represented.
Via the register services the states of the complex and digital I/O modules can
be determined or changed.
Register (Word) Access Reading (with FC3 and FC4):
Modbus-Address IEC61131
[dec] [hex] Address
Memory Range
0
... 255 0x0000
... 0x00FF %IW0
... %IW255 Physical Input Area (1)
First 256 Words of physical input data
256
... 511 0x0100
... 0x01FF - Modbus Exception:
“Illegal data address”
512
... 767 0x0200
... 0x02FF %QW0
... %QW255 Physical Output Area (1)
First 256 Words of physical output data
768
... 4095 0x0300
... 0x0FFF - Modbus Exception: “
Illegal data address”
4096
... 12287 0x1000
... 0x2FFF - Configuration Register
(see following Chapter 4.2.5.3 Configuration
Functions)
12288
... 24575 0x3000
... 0x5FFF - Modbus Exception: “
Illegal data address”
24576
... 25340 0x6000
... 0x62FC %IW256
... %IW1020 Physical Input Area (2)
Additional 764 Words physical input data
25341
... 28671 0x62FD
... 0x6FFF - Modbus Exception: “
Illegal data address”
28672
... 29436 0x7000
... 0x72FC %QW256
... %QW1020 Physical Output Area (2)
Additional 764 Words physical output data
29437
... 65535 0x72FD
... 0xFFFF - Modbus Exception: “
Illegal data address”
Register (Word) Access Writing (with FC6 and FC16):
Modbus-Address IEC61131
[dec] [hex] Address
Memory Range
0
... 255 0x0000
... 0x00FF %QW0
... %QW255 Physical Output Area (1)
First 256 Words of physical output data
256
... 511 0x0100
... 0x01FF - Modbus Exception:
“Illegal data address”
512
... 767 0x0200
... 0x02FF %QW0
... %QW255 Physical Output Area (1)
First 256 Words of physical output data
768
... 4095 0x0300
... 0x0FFF - Modbus Exception: “
Illegal data address”
4096
... 12287 0x1000
... 0x2FFF - Configuration Register
(see following Chapter 4.2.5.3 Configuration
Functions)
12288
... 24575 0x3000
... 0x5FFF - Modbus Exception: “
Illegal data address”
24576 0x6000 %QW256 Physical Output Area (2)