– RS232 ports is used for direct RS232 connection to PLC, BMS etc
Incoming modem calls – RS232 port connected to modem, used to accept
incoming calls only.
Incoming and outgoing modem (Sequence) – RS232 port connected to modem
used to accept incoming calls and also make calls upon shutdown alarms.
Outgoing modem alarms (Sequence) - RS232 port connected to modem, used to
make calls upon shutdown alarms.
Incoming and outgoing modem (Cyclic) – RS232 port connected to modem used
to accept incoming calls and also make calls upon shutdown alarms.
Outgoing modem alarms (Cyclic) - RS232 port connected to modem, used to
make calls upon shutdown alarms.
Selects how the port is to
be used