Rockwell Automation 1771-DA,D17716.5.13 U MNL 1771-DA ASCII I/O MODULE - Manual (Page 203)

ASCII Module
PLC-2 Family Processors
Appendix A
AĆ35
Figure A.12
Diagramming I/O Channels
Step 1 - Diagram the chassis connected in series to each channel (up to four)
of your scanner module. Then, fill in the information called for below. Example
values have been added.
1 1 0 2 0
2 0 0
3 1 0
4 Make interactive thru processor LIST
Scanner
= I/O Chassis
Description Number
Active I/O channels
Block Transfer I/O channels
Block Transfer modules on each
I/O block transfer channel
I/O chassis on each block-
transfer I/O channel (I/O
chassis in rack list)
Ch 1 Ch 2 Ch 3 Ch 4
3
2
3
4
0
0
1
2
0
0
12828
n= number of block-transfer modules in chassis
2. Using information from the diagram of I/O channels (Figure A.12),
look up the nominal time from the table in Figure A.13.