94 MODBUS/TCP
WAGO-I/O-SYSTEM
750
758-874/000-131
WAGO-I/O-IPC-C6
Manual
Version 1.0.0
10.2.2
Bit Services
With the digital bit services, determine or change the statuses of digital input and
output terminals for the following address ranges:
Table 47: Reading of Digital Input Terminals Using FC1, FC2
MODBUS Address Addresses in CoDeSys
Description
0x0000 – 0x01FF
(0 – 511)
%IX 0.0 ... %IX 32.15
+ offset value
Input process image
Bit-based addressing in MODBUS begins with
the first digital I/O module at the internal data
bus. If analog I/O modules are used, the
address range allocated by these modules is
skipped over by the addressing function (offset
value).
0x0400 – 0x0401
(1024 – 1025)
%IX2300.0 … %IX2300.1 Integrated digital inputs
0x3000 – 0x7FFF
(12288 – 32750)
%MX0.0 … %MX1279.15
Retain memory (8 kB)
Non-volatile PLC variables
Table 48: Writing of Digital Output Terminals Using FC5, FC15
MODBUS Address Addresses in CoDeSys
Description
0x0000 – 0x01FF
(0 – 511)
%QX 0.0 ... %QX 32.15
+ offset value
512 bits of digital output data.
Bit-based addressing in MODBUS begins
with the first digital I/O module at the internal
data bus. If analog I/O modules are used, the
address range allocated by these modules is
skipped over by the addressing function
(offset value).
0x0400 – 0x0401
(1024 – 1025)
%QX2300.0 … %QX2003.1 Integrated digital outputs
0x3000 – 0x7FFF
(12288 – 32750)
%MX0.0 … %MX1023.15
Retain memory (8 kB)
Non-volatile PLC variables
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