LG Master-K K120S/200S HMI Connection Manual

This document provides the connection manual for LG Master-K series PLCs (K120S/200S) to HMI panels, detailing RS-232 wiring pin assignments and communication settings (baud rate 38400, 8, None, 1). It defines the read/write address formats for PLC registers (PW, MW, KW, LW, FW, TW, CW, DW) and bit contacts (P, M, K, L, F, T, C), and notes that only 1:1 HMI-to-PLC communication is allowed with a fixed controller station number of 0.