Rockwell Automation 1771-DE Absolute Encoder Module User Manual - Manual (Page 52)

Appendix A
AĆ11
Description Number Ch1 Ch2 Ch3 Ch4
Active I/O channels 3
BlockĆtransfer I/O channels 2
BlockĆtransfer modules on each I/O
blockĆtransfer channel
7 0 1 0
I/O chassis on each blockĆtransfer
I/O channel (I/O chassis in rack list)
5 0 2 0
2. Determine a time from the table. Example values have been added.
1 2 3 4
1 40 52 54 58
2 67 68 76
3 98 99
4 123
Time (ms)
Active I/O channels
containing one or more
blockĆtransfer modules
Number of active I/O channels: 3
Number of active I/O channels containing one or more
block-transfer modules: 2
Time, from table: 68 ms
3. Compute the scanner times for each block-transfer channel.
Example values have been added.
(CT = Channel Time).
CT=[Time] x [#BT modules] + [#I/O chassis - 1] x 9 ms
(table) on BT channel on BT channel
CT1 = [68] x [7] + [5-1] x 9
= [68] x [7] + [4] x 9