Allen-Bradley 1747-SN User Manual page 49
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
4–4
Scanner Configuration and Programming
Bit Number
I/O Mix, Word 0
Primary/Normal Logical Device Address,
Word 1
Primary/Normal Logical Image Size,
É É É
Word 2
Complementary Logical Device Address,
Word 3
É É É
Complementary Logical Image Size,
Word 4
É É É
Note: A complementary logical rack is always
numbered 8 above its primary logical rack. Also, logical
racks 8, 9, 10, and 11 are sometimes referred to as
complementary logical racks 0, 1, 2, and 3.
Publication 1747 6.6 - July 1996
Word 3, Complementary Logical Device Address – specifies the
logical starting address of each complementary RIO link device.
The logical address consists of the logical rack number (8, 9, 10, or
11 because a complementary device is always 8 above its primary)
and starting logical group (0, 2, 4, or 6). Each bit in this word
represents a logical address. To specify an address you place a 1 at
the bit corresponding to the starting logical address of each logical
device.
Word 4, Complementary Device Logical Image Size – specifies
the logical image size (amount of scanner I/O image) of the
complementary devices set in word 3. As with word 3, these bits
correspond to RIO logical rack and logical group numbers. To
specify image size you place a 1 at each group a device occupies.
Important:
G File
15
14
13
12
11
10
0
0
1
0
0
0
RIO Logical Rack 3
RIO Logical Rack 2
Starting Logical Group
Starting Logical Group
6
4
2
0
6
4
É É
Ç Ç
0
0
1
0
0
0
É É
Ç Ç
RIO Rack 3
RIO Rack 2
Image Size
Image Size
6
4
2
0
6
4
1
É É
1
É É
1
0
0
Ç Ç
Ç Ç
1
RIO Logical Rack 11
RIO Logical Rack 10
Starting Logical Group
Starting Logical Group
6
4
2
0
6
4
0
0
É É
1
0
0
Ç Ç
0
RIO Rack 1 1
RIO Rack 10
Image Size
Image Size
6
4
2
0
6
4
É É
É É
Ç Ç
Ç Ç
1
1
1
0
0
1
É É
É É
Ç Ç
Ç Ç
Setting device addresses in word 3 of the G file
configures the system to operate in the complementary
I/O mode. Not setting device addresses in word 3
causes the system to operate only in the primary/normal
mode. If you wish to operate in the complementary
mode and you only have primary devices configured,
word 3 of the G file must be set to a decimal "1," and
word 4 of the G file must be equal to zero.
9
8
7
6
5
4
0
0
0
0
1
0
RIO Logical Rack 1
Starting Logical Group
Starting Logical Group
2
0
6
4
2
0
É É
Ç Ç
1
0
0
0
0
1
É É
Ç Ç
RIO Rack 1
Image Size
2
0
6
4
2
0
1
É É É
0
1
É É
1
É É
1
É É
1
Ç Ç
RIO Logical Rack 9
Starting Logical Group
Starting Logical Group
2
0
6
4
2
0
1
0
0
0
0
É É
1
Ç Ç
RIO Rack 9
Image Size
2
0
6
4
2
0
É É É
É É
É É
É É
Ç Ç
1
0
1
1
1
1
É É É
É É
É É
É É
Ç Ç
Contains scanner
3
2
1
0
information for the SLC.
0
0
0
0
Your programming device
RIO Logical Rack 0
automatically sets the
scanner information.
6
4
2
0
É É
Specifies the RIO
1
0
0
1
starting addresses of
É É
primary/normal logical
devices.
RIO Rack 0
Image Size
6
4
2
0
Specifies the logical
1
0
É É
0
1
image size assigned to
primary/normal logical
devices set in Word 1.
RIO Logical Rack 8
6
4
2
0
Specifies the RIO
1
0
É É
0
1
starting addresses of
complementary logical
devices.
RIO Rack 8
Image Size
6
4
2
0
É É
Specifies the logical
1
0
0
1
image size assigned to
É É
complementary logical
devices set in Word 3.
Quarter Logical Rack Devices
Full Logical Rack Device
Half Logical Rack Device
Three Quarter Logical Rack Device
Hide quick links:
Advertisement
Table of Contents
