M0 Control File Description - Allen-Bradley 1747-SN User Manual
Remote i/o scanner
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Also See for 1747-SN:
- Installation instructions manual (12 pages) ,
- Installation instructions manual (13 pages)
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4–14
Scanner Configuration and Programming
M0 (Control) File - RIO Device Control Words
Device
Logical Rack 0 Device Inhibit Word 8
Inhibit
Logical Rack 1 Device Inhibit Word 9
Control
Logical Rack 2 Device Inhibit Word 10
Logical Rack 3 Device Inhibit Word 11
Device
Logical Rack 0 Device Reset Word 16
Reset
Logical Rack 1 Device Reset Word 17
Control
Logical Rack 2 Device Reset Word 18
Logical Rack 3 Device Reset Word 19
Logical Rack 0 Remote Output Reset Word 24
Output
Logical Rack 1 Remote Output Reset Word 25
Reset
Logical Rack 2 Remote Output Reset Word 26
Control
Logical Rack 3 Remote Output Reset Word 27
Publication 1747 6.6 - July 1996
M0 Control File Description
You can control the operation of individual devices on the RIO link
with M0 word 8 through M0 word 27 (M0:e.8 through M0:e.27).
Through your application program, you can use the M0 file to:
Device Inhibit – command the 1747-SN RIO Scanner to stop
scanning an RIO device by using words 8 – 11.
Device Reset – command an RIO device's outputs to reset while
the SLC processor is in Run or Test mode by using words 16 –
19.
Remote Output Reset – command an RIO device's outputs to
reset upon the SLC processor leaving Run mode (regardless of
the RIO device's Hold Last State setting), or while in Test mode
by using words 24 – 27.
If you do not modify the Device Reset and Remote Output Reset
words, the device outputs reflect the scanner output image whenever
the SLC processor is in Run mode. If the SLC processor is in
Program, Test, or Fault mode, it instructs the device to reset its
outputs.
M file data is nonretentive. Upon entering Run or Test modes, the
SLC processor sets the M0 file to a default state. The processor does
not use the M0 file until a full program scan occurs (after entering
Run mode). This allows you to change the M file settings before
they take effect.
Important:
The 1747-SN RIO Scanner does not use M0 words 0 – 7.
Bit Number
15
14
13
12
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
e = slot number of the SLC rack containing the scanner
x = bit not used/defined
Important:
Control functions (i.e., device inhibit, device reset, and
device output reset) are only selectable for the primary
device, but also apply to the complementary device.
Control functions for complementary devices cannot be
exclusively enabled.
11
10
9
8
7
6
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
5
4
3
2
1
0
x
x
0
1
1
0
x
x
0
0
0
0
x
x
1
0
0
1
x
x
0
0
0
1
x
x
0
0
0
0
x
x
0
0
0
0
x
x
0
0
0
0
x
x
0
0
0
0
x
x
1
0
0
1
x
x
0
0
0
1
x
x
0
0
1
0
x
x
0
0
1
0
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