Rockwell Automation 8520 9/Series CNC Integration Maintenance Manual Documentation Set - Manual (Page 728)

Section 15A
Troubleshooting The Control
15A-18
The device number of the selected 1746 I/O Adapter device appears under
the “1746 I/O ADAPTER” heading. This number is selected on the 1746I
module using a dip switch (refer to page 10B-4 for details) and used in the
I/O assigner in PAL. Following the number is the message indicating
whether it is a 4, 7, 10, or 13 slot rack.
If the selected device is a 7, 10, or 13 slot rack, two or three screens may
be required to display all of the I/O data. When additional screens are
available, press and hold the [SHIFT] key and press the
[DOWN-ARROW] key to access additional screens with I/O data from
the same 1746 I/O Adapter. Cursoring down below the last row on each
screen will also access the next screen if it exists.
The 1746 I/O Adapter Diagnostic screen displays the inputs and outputs
that correspond to the terminal numbers on the 1746 I/O Adapter module.
They are listed in rows with each row representing a slot in the rack.
If an input or output is “ON”, its terminal number appears in inverse video.
If there is no I/O module in a slot, “EMPTY” follows the slot number.
This is a real time display, and its response is limited only by delays in
screen updates. Values for analog modules are displayed using four lines
of the display.
If more than one 1746 I/O Adapter is on the I/O Ring, a diagnostics screen
for each of these devices can be displayed. To display a diagnostics screen
for the next 1746 I/O adapter on the ring, while on the last page of the
current 1746 I/O adapter press and hold the [SHIFT] key and press the
[DOWN-ARROW] key.
Pressing the exit softkey (up arrow) at any time displays the Ring I/O
Menu screen.
If a 1771 I/O Adapter is selected on the Ring I/O screen and the {DISPLY}
softkey is pressed, the 1771 I/O Adapter Diagnostics screen appears. Since
the 1771 I/O Adapter is available in four different configurations, 4 Slot
Rack, 8 Slot Rack, 12 Slot Rack, and 16 Slot Rack, there are four possible
screens. Examples are shown in Figure 15A.6 and Figure 15A.7
15A.4.4
1771 I/O Ring Adapter