15a.4.8 analog i/o diagnostics screen – Rockwell Automation 8520 9/Series CNC Integration Maintenance Manual Documentation Set User Manual
Page 738
Section 15A
Troubleshooting The Control
15A-28
If an 9/Series Analog I/O device is selected on the Ring I/O screen and the
{DISPLY} softkey is pressed, the Analog I/O Diagnostics screen appears.
Figure 15A.11 is an example of this screen. 1746 Analog I/O devices are
discussed on page 15A-17.
Figure 15A.11
Analog I/O Diagnostics Screen
ANALOG I/O
U:
0 TO +10
B: -10 TO +10
DEV. INPUT
OUTPUT
NO.
U/B
VAL.
VOLTAGE
U/B
VAL.
VOLTAGE
0
B
12C
1.464
U
012
0.044
1
U
52F
3.238
U
830
5.114
2
U
82C
5.104
B
800
-10.000
3
B
F12
-1.137
U
F12
9.419
6
U
800
5.000
B
012
0.088
7
B
800
-10.000
B
012
0.088
8
B
800
-10.000
B
012
0.088
9
B
800
-10.000
B
012
0.088
10
B
800
-10.000
B
012
0.088
11
B
800
-10.000
B
012
0.088
12
B
800
-10.000
B
012
0.088
The device numbers for all Analog I/O devices that are on the I/O Ring
will appear under the “ANALOG I/O” heading. These will be decimal
numbers from 00 to 15.
If more than 13 Analog I/O devices are connected to the I/O Ring, press
and hold the [SHIFT] key and press the [DOWN-ARROW] key to access
the remaining devices. Pressing these keys or cursoring below the last
device on the screen will cause the next Analog I/O Diagnostics screen to
appear.
Each device listed is followed by several columns of diagnostic values.
These columns are:
U/B
This indicates whether the device is Unipolar (0 to 10 volts) or Bipolar
(-10 to 10 volts) as determined by device switch settings.
VAL.
This is the HEX representation of the digital equivalent of the analog
voltage level from or to the device.
VOLTAGE
This is the voltage level from or to the device.
15A.4.8
Analog I/O
Diagnostics Screen