FloBoss 103/104 Instruction Manual
Revised August-2017 Communications 5-5
Delay, and 10 millisecond Key Off Delay. On power up, the modem
must be set up for Auto Answer. Periodic checks are made to ensure
that the modem is still in Auto Answer or that it is not left off the hook
after a certain period of non-communication.
The modem card interfaces to two-wire, full-duplex telephone lines
using asynchronous operation at data baud rates of 1200 and 2400. The
modem can be controlled using industry-standard AT command
software. A 40-character command line provides AT command set,
which is compatible with EIA document TR302.2/88-08006.
The initialization Config Command modem strings are:
▪ 1200 Dial-up Modem – ATSØØ=Ø1SØ7=Ø2
▪ 2400 Dial-up Modem – ATSØØ=Ø1
Signal wiring connections to the communications card are made through
the terminal block located on the termination board. A nine-terminal
removable connector is used for the wiring of external device
communications. A label on the termination board denotes the usage of
each pin on the connector.
The dial-up modem card interfaces to a PSTN line through the screw
terminals with two wires. The dial-up modem card provides for a
telephone interface on the host port that is capable of both answering
and originating phone calls. The dial-up modem card also provides
electronics that conserve power when the phone line is not in use. The
dial-up modem card provides some protection from transients on the
phone lines; however, if the potential for lightning damage is high,
additional surge protection for the phone lines should be installed
outside the FloBoss enclosure.
Table 5-4 displays the connector signals and their functions:
Table 5-4. Dial-Up Modem Communications Card Wiring
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