Rockwell Automation 1746-HSTP1 Stepper Controller Module/ User Manual - Manual (Page 61)

Publication 999-121 - December 1999
5-26 Configuration and Programming
in order to generate the output pulses. Wiring for the diagnostic
feedback test is shown in the following diagram.
Configuration Data for Loop Back Diagnostic Test
N9 Configuration for Loop Back Diagnostics Test:
N9:0–3120923100 00000
Ladder Instructions for Loop Back Diagnostics Test
This rung is used to test the loopback information. Command should
equal feedback when the move is complete. The Module is shown in
slot 1 for this example.
NOTE: In the above rung, use of the EQU (equal) test means that
source A equals the command in both the MSW and LSW words;
source B in both cases, is the value reported by the loop back
diagnostic.
1
3
5
7
9
11
13
15
17
2
4
6
8
10
12
14
16
18
move
complete
1=yes
I:1
7
EQUAL
Source A I:1.2
-32753
Source B I:1.4
-32753
test okay
O:0
( )
feedback=
command MSW
EQU
EQUAL
Source A I:1.3
0
Source B I:1.5
0
feedback=
command LSW
EQU
4