Industrial Electronic Engineers, Inc.
SIZE
A
CODE IDENT NO.
05464
SL330-X4X
I
Van Nuys, California
SCALE N/A
REV
C
SHEET 20
04/14/05
4.5
Dedicated Hardware Lines
Not available.
4.6
Serial Data and Self-test
The display has a 128 byte receive buffer. In order to avoid overrun of the receive buffer with no-
handshake (RS422 condition), all data strings sent by the host need a 10ms delay after sending 160 bytes
of data.
Serial characters are received with data formatted as a 10-bit word. The command set is structured to allow
transmission of 8 data bits. The data rate is fixed at 9600 baud. The level is EIA-232C.
(EIA-232) (LSB) (MSB)
+15 TO +3V
-15 TO -3V
b0
b1
b2
b3
b4
b5
b6
b7
1 START BIT 8 DATA BITS 1 STOP BITS
Self-test is a very useful feature and can be activated by sending 1F-40 (HEX). The test may be terminated
by sending 1B-40 (HEX). Characters from 20 (HEX) to F2 (HEX) will be displayed advancing through the
characters at approximately 2.0 characters per second. This self-test capability can be used to speed up
both in-field fault isolation and incoming receiving inspection.
4.7
Connector Pin Assignment
EIA-232C
J1 (RJ-45)*
PIN NO.
FUNCTION
1
SIGNAL GROUND
2,7
12-29 VOLTS
3
TRANSMIT DATA (OUTPUT)
4
DATA SET READY (INPUT)
5
DATA TERMINAL READY (OUTPUT)
6
RECEIVE DATA (INPUT)
8
POWER RETURN
* Shielded connector is standard.
EIA-422A
J1 (RJ-45)*
PIN NO.
FUNCTION
1
SIGNAL GROUND
2,7
12-29 VOLTS
3
TRANSMIT DATA (A+)
4
TRANSMIT DATA (A-)
5
RECEIVE DATA (A-)
6
RECEIVE DATA (A+)
8
POWER RETURN
* Shielded connector is standard.
