Logical Device Fault Status - Allen-Bradley 1747-SN User Manual
Remote i/o scanner
Hide thumbs
Also See for 1747-SN:
- Installation instructions manual (12 pages) ,
- Installation instructions manual (13 pages)
Table of Contents
Advertisement
4–26
Scanner Configuration and Programming
Bit Number (decimal)
Primary Device Address, Word 8
Primary Device Size, Word 9
Primary Active Device Status, Word 10
The information contained in words 8, 9, and 10
indicates a three quarter logical rack device beginning at
Logical Rack 3 Logical Group 2 is faulted or configured
to an incorrect logical rack size. This device status is
confirmed in bits 1, 2, and 3 of Device Fault Status Word
15.
Logical Rack 0 Device Fault Status Word 12
Logical Rack 1 Device Fault Status Word 13
Logical Rack 2 Device Fault Status Word 14
Logical Rack 3 Device Fault Status Word 15
Bit Number (decimal)
Complementary Device Address, Word 3
Complementary Device Size, Word 4
Complementary Active Device Status, Word 5
The information contained in word 3, 4, and 5 indicates a
three quarter logical rack device beginning at group 2 is
inhibited, faulted, or configured to an incorrect logical
rack size. This device status is confirmed in bits 5, 6,
and 7 of Device Fault Status Word 15.
Logical Rack 8 Device Fault Status Word 12
Logical Rack 9 Device Fault Status Word 13
Logical Rack 10 Device Fault Status Word 14
Logical Rack11 Device Fault Status Word 15
Publication 1747 6.6 - July 1996
Logical Device Fault Status
Words 12 through 15, bits 0 to 7 – indicate the device fault status
for logical racks 0, 1, 2, 3, 8, 9, 10, and 11. Bits 0 through 3 are for
primary/normal devices and bits 4 through 7 are for complementary
devices. Each bit corresponds to a quarter logical rack location. If a
device is not responding to communications, has gone off line, or is
configured to an incorrect logical rack size, all bits corresponding to
the device will be set to 1. This is highlighted in the example below.
M1 (Status) File Primary/Normal Device Fault Status
15
14
13
12
11
RIO Rack 3
Starting Group
6
4
2
0
É É
É É É
É É
É É
0
0
1
0
1
1
1
0
É É
É É
É É É
É É
0
0
0
0
É É
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 = not used/defined
M1 (Status) File Complementary Device Fault Status
15
14
13
12
11
RIO Rack 11
Starting Group
6
4
2
0
0
0
1
0
É É
É É É
É É
É É
1
1
1
0
É É
É É É
É É
É É
0
0
0
0
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 = not used/defined
10
9
8
7
6
RIO Rack 2
RIO Rack 1
Starting Group
Starting Group
6
4
2
0
6
4
0
0
1
0
0
0
0
1
1
0
1
1
0
0
1
0
0
0
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
10
9
8
7
6
RIO Rack 10
RIO Rack 9
Starting Group
Starting Group
6
4
2
0
6
4
0
0
1
0
0
0
0
1
1
0
1
1
0
0
1
0
0
0
x
x
x
x
0
0
x
x
x
x
0
0
x
x
x
x
0
0
É É É
É É
É É
x
x
x
x
1
1
5
4
3
2
1
0
RIO Rack 0
Starting Group
2
0
6
4
2
0
0
1
1
0
0
1
1
1
1
0
0
1
0
1
1
0
0
1
x
x
0
0
0
0
x
x
0
0
0
0
x
x
0
0
0
0
É É
É É
É É
x
x
1
1
1
0
É É
É É
É É
5
4
3
2
1
0
RIO Rack 8
Starting Group
2
0
6
4
2
0
1
0
1
0
0
1
1
1
1
0
0
1
0
1
1
0
0
1
0
0
x
x
x
x
0
0
x
x
x
x
0
0
x
x
x
x
1
0
x
x
x
x
M1 File
M1:e.8
M1:e.9
M1:e.10
M1:e.12
M1:e.13
M1:e.14
M1:e.15
M1 File
M1:e.3
M1:e.4
M1:e.5
M1:e.12
M1:e.13
M1:e.14
M1:e.15
Hide quick links:
Advertisement
Table of Contents
