4
SCI-SLX JUMPER SELECTION
SERIAL PORT COMMUNICATION FORMAT
RS-232 SELECTION JP3, 5 position jumpers with header attached, factory default.
RS-422 SELECTION JP4, 5 position jumper, move header to this position for RS-422.
SCI-SLX 9 PIN 'D' RS-422 WIRING
PIN #
FUNCTION
∗
DIRECTION
1
Ground
----
2
Transmit A
Output ( Tx Data - )
3
Receive B
Input ( Rx Data + )
4
Receive Common
----
5
N/C
----
6
Transmit Common
----
7
Transmit B
Output ( Tx Data + )
8
Receive A
Input ( Rx Data - )
9
Frame Ground
----
∗
(Same as standard: ANSI/SMPTE 207M/1984)
SCI-SLX 9 PIN 'D' RS-232 PIN ASSIGNMENT
PIN #
FUNCTION
∗
DIRECTION
1
N/C
----
2
RECEIVE DATA
INPUT
3
TRANSMIT DATA
OUTPUT
4
DATA TERMINAL READY
OUTPUT----
5
SIGNAL GROUND
N/A
6
DATA SET READY
INPUT
7
READY TO SEND
OUTPUT
8
CLEAR TO SEND
INPUT
9
N/C
----
The Pin assignments noted are per the RS-232 standard. Although the standard defines the use of
twenty-five (25) Pins, only nine (9) are required for basic PC serial communications. Of those nine pins, only
seven are required for communication to the SCI when hand shaking is active. Consult the control device
manufacturer’s data sheet to determine proper wiring.
