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WAGO-I/O-SYSTEM 750
Function Description
91
750-880, 750-880/025-000 ETHERNET Programmable Fieldbus Controller
Manual
Version 1.0.1
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IEC-61131-3 Overview of Address Areas:
Table 33: IEC-61131-3 address areas
Address area
MODBUS
Access
PLC
Access
Description
phys. inputs
read
read
Physical inputs
(%IW0...%IW255 und
%IW512...%IW1275)
phys. outputs
read/write read/write Physical outputs
(%QW0...%QW255 und
%QW512...%QW1275)
MODBUS/TCP
PFC-IN variables
read/write read
Volatile PLC input variables
(%IW256...%IW511)
MODBUS/TCP
PFC-OUT variables
read
read/write Volatile PLC output variables
(%QW256...%QW511)
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Ethernet/IP
PFC-IN variables
-
read
Volatile PLC input variables
(%IW1276 ... %IW1531)
Ethernet/IP
PFC-OUT variables
-
read/write Volatile PLC output variables
(%QW1276 ... %QW1531)
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Configuration register read/write -
see
Section
"MODBUS
Functions
MODBUS Registers
Configuration Registers"
Firmware register
read
-
see Section "MODBUS Functions
MODBUS Registers
Firmware Information Registers"
Retain variables
read/write read/write Remanent memory
(%MW0...%MW8192)
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