Flag Area; Figure 107: Flag Area - WAGO 750-8207 Manual

WAGO-I/O-SYSTEM 750
750-8207 PFC200 CS 2ETH RS 3G
10.4.2

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 107: 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.
Draft version 1.2.1 from 2017-09-13, valid from FW Version 02.06.20(09)
MODBUS – CODESYS 2 285
Manual