7
. Interfaces and Communication
7.1 About Use of MD290 Terminals .................................................................... 202
7.2 Serial Communication .................................................................................. 204
7.3 About Multi-functional Extension Interfaces.................................................. 205
'H¿QLWLRQRI&RPPXQLFDWLRQ'DWD$GGUHVV .................................................. 206
7.5 Modbus Communication Protocol................................................................. 209