Rockwell Automation 1785-L20C_L40C, D17856.5.14 ControlNet PLC-5 Programmable Controllers User Manual - Manual (Page 36)

Chapter 2
Planning to Use Your ControlNet
PLCĆ5 Processor
2-8
Remote I/O
The following table shows the default number of input and output words
reserved by the 6200 PLC-5 Programming Software for the different sizes
and addressing modes of non-ControlNet remote I/O if you first configure
non-ControlNet remote I/O on your processor:
Addressing Mode
Number of Words Reserved
Addressing Mode
4 Slots 8 Slots 12 Slots 16 Slots
2 Slot 2 4 6 8
1 Slot 4 8 12 16
1/2 Slot 8 16 24 32
The 6200 PLC-5 Programming Software reserves non-ControlNet remote-
I/O output- and input-image space according to these guidelines:
It does not overlap processor-resident local I/O reserved image space
It addresses input- and output-image space offset in octal from
- 00-37—for the PLC-5/20C processor
- 00-177—for the PLC-5/40C processor
The output-image offset value in the I/O map corresponds to the first
slot of the referenced chassis—i.e., in a 4-slot chassis set for 1-slot
addressing, the corresponding output-image offset of O:10 would map
the words O:10, O:11, O:12, and O:13 to slots 0, 1, 2, and 3 respectively
The input-image offset corresponds to the first slot in the referenced
rack, and the offset location of the input modules in that rack
corresponds to the same offset in the image table—i.e., if a chassis set
for 1-slot addressing has an input-image offset of I:10 and an input
module in slot 3 (of 0-7), the word that corresponds to that input module
would be I:10 + 3, or I:13