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Following example describes the setting for an "EXP" instruction to read
from the plc with address "1" of 10 consecutive bit from "data register" DT0
to DT9, keeping read value on area VW0..9.
2.2.22 MapEXP mapping function for external I/O
MapEXP communication function allows to declare expansion devices of
I/O expansion connected to the port EXP1 for the automatic reading/writing
of input/outputs and data. This function is activated only when for the serial
port EXP1 on the project the communication protocol EXP-I/O-CANBUS is
selected. This protocol allows PL260 to take the control of the CANbus
communication line, controlling data flow towards slave devices.
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