MITSUBISHI ELECTRIC MITSUBISHI MAM MAM-AM24 - Manual (Page 45)

10.6.2 MAM-AMx: Mitsubishi Alarm Modems 56k with RS232 and RS485
Appendix Terminals
Mitsubishi Alarm Modem 10 - 10
COM1 (RS232) - +
10...30 V DC
Service
Power Process Line Data out Modem Mode
MAM-AM6 MAM-AM20
MAM-AM24
COM2 (RS232) COM1 (RS232) - +
10...30 V DC
Service
Power Process Line Data out Modem Mode
COM1 (RS232) R+ R- -T +T (0V) - +
10...30 V DC
Service
Power Process Line Data out Modem Mode
56k 56k
56k
Line
Line Line
Abb. 10-4: MAM-AMx: Mitsubishi Alarm Modems 56k with RS232 and RS485