User Manual

3.7 Using 4 COM port Application-1
MMICON
7000 series
SST-900/SST-2400
Radio Modem
7000 Series
SST-900/SST-2400
Radio Modem
PC PLC
7523
COM2:RS-485
COM1:RS-232
COM4:RS-232
COM3:RS-232
COM1: PLC can access the I/O states of 7000 modules
COM2: Directly controls the 7000 input/output modules
COM3: MMICON is used as the local MMI
COM4: PC is used to monitor & record the system data.
Note: the 7523 has 4 COM port.
7521/2/2A/3/4/7 Series Hardware User’s Manual, Ver. 1.5 Sep/2002, 7Mh-001-15 -----71