Table of Contents
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Chapter 3
Configuring Your Block I/O for PLC
Family Programmable Controllers
3-4
1747 SN
1747 SN
1771 SN
1771 SN
PLC 2
PLC 2
Rack
Rack
Rack
Rack
Rack
Rack
Number
Number
Number
Number
Number
Number
Rack address 77 is an illegal configuration.
PLC 5/11 processors can scan rack 03.
PLC 5/15 and PLC 5/20 processors can scan racks 01 03.
PLC 5/25 and PLC 5/30 processors can scan racks 01 07.
PLC 5/40 and PLC 5/40L processors can scan racks 01 17.
PLC 5/60 and PLC 5/60L processors can scan racks 01 27.
PLC 5/250 processors can scan racks 0 37.
PLC 3 processors can scan racks 0 76.
The SLC 500 controllers communicate with the block I/O using an I/O
Scanner module (cat. no. 1747-SN series A). Refer to the user manual for
the 1747-SN/A Scanner module for more information.
Note: These block I/O modules are not compatible with the 1747-DSN
Distributed I/O Scanner module.
PLC 5
PLC 5
PLC 5/250
PLC 5/250
PLC 3
PLC 3
Rack
Rack
Rack
Rack
Rack
Rack
Number
Number
Number
Number
Number
Number
Rack 51
Rack 52
Rack 53
Rack 54
Rack 55
Rack 56
Rack 57
Rack 60
Rack 61
Rack 62
Rack 63
Rack 64
Rack 65
Rack 66
Rack 67
Rack 70
Rack 71
Rack 72
Rack 73
Rack 74
Rack 75
Rack 76
Not Valid
SW1 Switch Position
8
7
6
5
4
1
0
1
0
0
1
0
1
0
1
1
0
1
0
1
1
0
1
1
0
1
0
1
1
0
1
0
1
1
1
1
0
1
1
1
1
1
0
0
0
1
1
0
0
0
1
1
0
0
1
1
1
0
0
1
1
1
0
1
0
1
1
0
1
0
1
1
0
1
1
1
1
0
1
1
1
1
1
0
0
1
1
1
0
0
1
1
1
0
1
1
1
1
0
1
1
1
1
1
0
1
1
1
1
0
1
1
1
1
1
1
1
1
1
1
3
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
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