15a.4.7 hpg diagnostics – Rockwell Automation 8520 9/Series CNC Integration Maintenance Manual Documentation Set User Manual
Page 737

Section 15A
Troubleshooting the Control
15A-27
If a Hand Pulse Generator (HPG) device is selected on the Ring I/O screen
and the {DISPLY} softkey is pressed, the HPG Diagnostics screen appears.
Figure 15A.10 is an example of this screen.
Figure 15A.10
HPG Diagnostics Screen
HPG
SETUP MODE
DEVICE NO.
NUMBER
0
011011
1
111111
2
000000
The device numbers of all HPG devices that are on the I/O Ring will
appear under the “HPG” heading. These may be any decimal numbers
from 00 to 07.
To the right of each device number is a number for each of the HPG’s.
This is the pulse count value of the pulse counter that counts from 0 to 63
and then rolls over. Even though the number of pulse counts displayed for
each HPG is limited to 64, the total pulse count of each HPG, which is
stored internally by the system software, is unlimited.
Since this is a real time display, its response is limited only by delays in
screen updates.
Only HPG devices connected to the I/O Ring are displayed on this screen.
Pressing the exit softkey (up arrow) at any time displays the Ring I/O
Menu screen.
15A.4.7
HPG Diagnostics