How to use ASCII Manager in M238 Controller Port2.
Using ASCII Protocol is possible with Modicon M238 controller and it should be possible using function block SEND_RECV_MSG
of the M238 in reception mode.M238 controller will also able to receive ASCII frame sent by the third party device or Schneider Device
without send any message.
Refer to attached resolution and sample project( M238- Port2)explaining ASCII communication between Modicon M238 controller
and Hyperterminal indicating the function blocks.