2-14
2
1
2.7.2
2363 Connections
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
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 2363 SERIAL PIN ASSIGNMENTS (J1)
Signal
Pin
2363 Function
Shield
1
Chassis or shield ground
TxD
2
RS-232 Received Data input
RxD
3
RS-232 Transmit Data output
RTS
4
Internal jumper for DTE devices
CTS
5
DSR
6
+5 Vdc
GND
7
Logic Ground
DCD
8
+5 Vdc
DTR
20
no connection
Tx/Rx+
16
RS-485 Tx/Rx Data I/O
Tx/Rx-
14
RS-485 Tx/Rx Data I/O
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.
