Specifications

Jumper Configurations
Table A-1
Jumper Descriptions (continued).
JUMPER # DESCRIPTION
W17(A,B) Install W17A to bring J2 pin 1 to the
RS-422/485 driver from serial port 2 serial
data out (SOUT1). Install W17B to ground
J2 pin 1 to provide shell ground to the
RS-232-C interface. Remove both W17A
and W17B to leave J2 pin 1 open. Factory
default installs W17B.
W17A W17B Function
IN OUT RS-485 operation, serial port 2
(connector J2)
OUT IN † RS-232 operation, serial port 2
(connector J2)
OUT OUT No connection to J2 pin 1
W20 Install W20 to select an asynchronous wait
request input. Remove W20 to select a syn-
chronous wait request input. Factory default
installs this jumper.
W20 Function
IN † Asynchronous wait request
OUT Synchronous wait request
A-16