294 Modbus – CODESYS 2
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)
9.4.2
Flag Area
Modbus can also exchange data and fieldbus variables with the PLC via the flag
area. Caution is urged, however, when using data and/or variables in this area
that is accessed by both Modbus and the PLC. This “conflicting” access is not
protected from either side and could result in data inconsistency.
Figure 99: Flag Area
The figure shows the maximum addressable flag area with a size of 104 kB.
The actual addressable flag area depends on the current memory arrangement in
the target system settings in CODESYS.
The default setting is 24 kB.