Power Supplies; Rs232 Printer Port - Phonetics SENSAPHONE EXPRESS II User Manual

PHONE LINE INSTALLATION
Connect Express II to a standard 2-wire analog phone line. Express II dials using pulse or tone,
with loop start only. Express II will operate with all standard telephone systems that accept
pulse or tone dialing and will recognize ringer frequencies from 16 to 60 Hz.
NOTE:
Certain private telephone systems and public switching equipment may not accept Express II
dialing or may generate an unacceptable ring signal. In those cases, a dedicated line may be
required for Express II. Consult the supplier of your telephone system if you encounter prob-
lems.
CAUTION: Never install telephone wiring during a lightning storm. Never install telephone
jacks in wet locations unless the jack is specifically designed for wet locations. Never touch
uninsulated telephone wires or terminals unless the telephone line has been disconnected at the
network interface. Use caution when installing or modifying telephone lines.

POWER SUPPLIES

Express II will provide battery-backed 12 Volts DC (100 mA max.) and 24 Volts DC (400 mA
max.) to power current loops and other external devices.

RS232 Printer Port

Express II comes with a cable and DB25 connector for connection to a serial printer. This can
be used to perform data logging of input values and/or unit activity directly to a printer (see
Chapter 5). You may also print the unit's programming parameters (see Chapter 7). The RJ11
connector at the end of the cable must be connected to the RJ11 jack labeled RS232 on the
main board, located below the access panel. The default baud rate of the RS232 port is 9600
baud. The baud rate may be changed from the System menu under Unit Configuration (see
Chapter 5). The communications protocol is 8 data bits, no parity, and 1 stop bit. Shown below
are the RS232 pin descriptions for the DB25 connector.
Pin Signal
1 Frame Ground
2 Transmitted Data
3 Received Data
6 Data Set Ready
7 Signal Ground
20 Data Terminal Ready
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6 Sensaphone Express II User's Manual
Symbol Direction
FG N/A
TD From Printer
RD From Express II
DSR From Express II
SG N/A
DTR From Printer