266 Run-time System CODESYS 2.3
WAGO I/O SYSTEM 750 XTR
750-8202/040-001 PFC200 2ETH RS TELE XTR
Manual
Version 1.2.0, valid from FW Version 03.01.07(13)
Table 206: Access to the Process Images of the Input and Output Data – Modbus
Memory area
Description
Access via
PLC
Logical Address Space
Modbus input
process image
Modbus input variables,
addressed by word via Modbus
Read
Word
%IW1000 to %IW1999
Byte
%IB2000 to %IB3999
Modbus input variables,
addressed by bit via Modbus
Read
Bit
%IX1000.0 …%IX1000.15 to
%IX1384.0 … %IX1384.15
Modbus output
process image
Modbus output variables,
addressed by word via Modbus
Read/
Write
Word
%QW1000 to %QW1999
Byte
%QB2000 to %QB3999
Modbus output variables,
addressed by bit via Modbus
Read/
Write
Bit
%QX1000.0 …
%QX1000.15 to %QX1384.0
… %QX1384.15
Table 207: Access to the Process Images of the Input and Output Data – Flags
Memory Area
Description
Access via
PLC
Logical Address Space
Flag variables
Total of 128 kB remanent
memory (65536 words).
Read/
Write
%MW0 to
%MW65535
104 kB addressed by word via
Modbus (53248 words)
Read/
Write
Word (Modbus)
%MW0 to %MW3327
6.5 kB addressed by bit via
Modbus (3328 words).
Read/
Write
Bit (Modbus)
%MX0.0 … %MX0.15 to
%MX3327.0 …
%MX3327.15
Retain variables Retain memory addressed by
symbols in the NVRAM: 128 kB
Read/
Write
-
* The use of up to 250 I/O modules is possible with the WAGO local bus extension modules.
The total size of the memory for flag and retain variables is 128 kB (131060
bytes). The size of these two sections can be customized as required, provided
the total (permissible) size is not exceeded.
If you are using bit-oriented addressing, remember that the basic address is
word-based. The bits are addressed from 0 to 15.