Rs-485 serial triggering example – Rockwell Automation 2706-LV2P_LV2R_LV4P_LV4R DL40 PLUS USER MANUAL User Manual
Page 187
Serial and Parallel Port Examples
F–2
Publication 2706-807 – July 1998
RS-485 Serial Triggering Example
This example shows serial triggering of the DL40 Plus through the
RS-485 port using Channel 0 of an SLC. A PLC with Channel 0
could also be used.
<END>
ASCII Handshake Lines
Channel
0
AND Mask
0000h
OR Mask
0002h
Control
R6:1
Channel Status
001Eh<
Error
0<
<ER>
Timer On Delay
Timer
T4:0
Time Base
1.0
Preset
1<
Accum
0<
This program continuously sends the contents of the string file ST9:0 out
the Channel 0 port of the SLC to the RS-232 port of the DL40 Plus.
TON
0000
AHL
0001
0004
T4:0
DN
T4:0
<EN>
<DN>
<EN>
<DN>
DN
ASCII Write
Channel
0
Source
ST40:0
Control
R6:0
String Length
0<
Characters Sent
25<
Error
0<
<ER>
AWT
0002
T4:0
<EN>
<DN>
DN
ASCII Handshake Lines
Channel
0
AND Mask
0002h
OR Mask
0000h
Control
R6:2<
Channel Status
001Dh<
Error
0<
<ER>
AHL
0003
T4:0
<EN>
<DN>
DN
R6:0
EM