ICS ELECTRONICS 4863 Manual page 43

2.7.2
The 2363 has two connectors on the rear panel. J1 is the serial interface
connector and J2 is the Digital I/O Connector.
2.7.2.1 RS-232 Connections
The 2363's serial interface connector (J1) is a DB-25S 25 pin female
connector with both RS-232 and RS-485 signals. The RS-232 signals are
2
configured as a DCE device. Pin arrangements are such that the 2363 can
be connected to any DTE device such as a PC COM port or to a terminal with
most pin-to-pin RS-232 cables. The 2363 does not use any data handshaking
since its command and response strings are fairly short.
CAUTION - Pins 14 and 16 contain RS-485 signals and
should not be connected to any RS-232 level signals. Check
standard RS-232 cables to be sure these pins are open before
plugging the cable into a 2363.
Table 2-1 lists the pin assignments for the 2363's serial interface.
TABLE 2-1
Note that the RS-232 specification defines TxD as data being trans-
mitted to the DCE device; RxD as the data being transmitted to the
DTE device. Therefore, TxD is pin 2 on the 2363's serial connector.
2363 Connections
2363 SERIAL PIN ASSIGNMENTS (J1)
Signal Pin
Shield 1
TxD 2
RxD 3
RTS 4
CTS 5
DSR 6
GND 7
DCD 8
DTR 20
Tx/Rx+ 16
Tx/Rx- 14
1
2363 Function
Chassis or shield ground
RS-232 Received Data input
RS-232 Transmit Data output
Internal jumper for DTE devices
+5 Vdc
Logic Ground
+5 Vdc
no connection
RS-485 Tx/Rx Data I/O
RS-485 Tx/Rx Data I/O
2-14