Rockwell Automation 1771-ASB/E Remote I/O Adapter User Manual - Manual (Page 40)

3–10 Addressing Modes for Your Remote I/O
Publication 1771-UM001A-US-P - February 2000
Follow these guidelines when configuring your remote system with
complementary I/O chassis:
•
Assign the complementary I/O rack number to a chassis of equal
or smaller size than the primary chassis.
•
If the complementary chassis is smaller than the primary one, set
the last chassis switch on the complementary chassis to the ON
position, unless the adapter is in the faulted I/O search mode.
•
For PLC-2 family processors:
•
Connect the complementary chassis to the same scanner
channel as the primary chassis.
•
Connect the complementary chassis to the remote trunkline as
though they were additional primary chassis.
•
For PLC-3 processors, connect the complementary chassis to a
different scanner channel as the primary chassis.
•
Assign the same beginning I/O group number to both I/O racks.
•
You cannot configure complementary I/O in a chassis that uses a
combination of 2-slot addressing and 16-point I/O.
•
You cannot use 32-point I/O modules in a complementary I/O
configuration when you select 2-slot or 1-slot addressing.
•
You can place an output module opposite another output
module; they reflect the same bits in the output image table.
•
Do not place an input module opposite an input module.
You can use the following modules in either primary or
complementary I/O chassis opposite any type of module:
Catalog Number Description
1771ĆE1, ĆE2, ĆE3 Analog Input Expander Assembly
1771ĆE4 Analog Output Expander Assembly
1771ĆIY Thermocouple Input Expander Module Assembly
1771ĆES Servo (Encoder Feedback) Expander Assembly
1771ĆKA2 Communication Adapter Module
1771ĆKE Communication Controller Module
1771ĆKG PLCĆ2 Family/RSĆ232ĆC Interface Module
1771ĆOJ Pulse Output Expander Assembly
1771ĆAF Fiber Optics Converter Module