The host channel of the TSX SCY 21601 module equipped with the PCMCIA card (TSX SCP 111, 112, 114) enables you to use the READ_VAR and WRITE_VAR communication functions to communicate with the server of a master:
From module TSX SCY 21601 in position 0 of the slave rack and through the built-in link, the server of the master can be accessed:
READ_VAR(ADDR('0.2.0.0'), '%MW', 0, 5, %MW50:4, %MW20:5)