
When configured as complementary I/O:
● PLC2 can scan racks 01-07
● PLC5/11 can scan rack 03
● PLC5/20,
PLC5/30, PLC5/40,
PLC5/60 can scan racks 01-07
ATTENTION: Series A modules do not support
complementary I/O.
Configuring Your Block I/O for PLC
Family Programmable Controllers
Chapter 4
4-4
SW1 Switch Position
PLC-3
Rack
Number
PLC-5/250
Rack
Number
PLC-5
Rack
Number
PLC-2
Rack
Number
1771SN
Rack
Number
1747SN
Rack
Number
345678
PLC-3
Rack
Number
PLC-5/250
Rack
Number
PLC-5
Rack
Number
PLC-2
Rack
Number
1771SN
Rack
Number
1747SN
Rack
Number
Rack 51 1 0 1 0 0 1
Rack 52 1 0 1 0 1 0
Rack 53 1 0 1 0 1 1
Rack 54 1 0 1 1 0 0
Rack 55 1 0 1 1 0 1
Rack 56 1 0 1 1 1 0
Rack 57 1 0 1 1 1 1
Rack 60 1 1 0 0 0 0
Rack 61 1 1 0 0 0 1
Rack 62 1 1 0 0 1 0
Rack 63 1 1 0 0 1 1
Rack 64 1 1 0 1 0 0
Rack 65 1 1 0 1 0 1
Rack 66 1 1 0 1 1 0
Rack 67 1 1 0 1 1 1
Rack 70 1 1 1 0 0 0
Rack 71 1 1 1 0 0 1
Rack 72 1 1 1 0 1 0
Rack 73 1 1 1 0 1 1
Rack 74 1 1 1 1 0 0
Rack 75 1 1 1 1 0 1
Rack 76 1 1 1 1 1 0
Not Valid 1 1 1 1 1 1
Rack address 77 is an illegal configuration.
PLC5/11 processors can scan rack 03.
PLC5/15 and PLC5/20 processors can scan racks 01-03.
PLC5/25 and PLC5/30 processors can scan racks 01-07.
PLC5/40 and PLC5/40L processors can scan racks 01-17.
PLC5/60 and PLC5/60L processors can scan racks 01-27.
PLC5/250 processors can scan racks 00-37.
Table 4.G
Switch
Settings for Block I/O as Complementary I/O
(PLC-2 and PLC-5 only)
PLC-2
PLC-5
SW1 Switch Position
Rack
Number
Rack
Number
8 7 6 5 4 3
Rack 1 Not Valid 0 0 1 0 0 0
Rack 2 Rack 1 0 0 1 0 0 1
Rack 3 Rack 2 0 0 1 0 1 0
Rack 4 Rack 3 0 0 1 0 1 1
Rack 5 Rack 4 0 0 1 1 0 0
Rack 6 Rack 5 0 0 1 1 0 1
Rack 7 Rack 6 0 0 1 1 1 0
Rack 7 0 0 1 1 1 1
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