Module scan time – Rockwell Automation 1771-IFF/A,D17716.5.116 FAST ANALOG INPUT MODULE User Manual
Page 70
A-2
Publication 1771Ć6.5.116 - July 1996
Description
Value
Keying
between 10 and 12
between 24 and 26
Wiring Arm
Catalog Number 1771-WG
Field Wiring Arm Screw Torque
7Ć9 inchĆpounds
Agency Certification
(when product or packaging is marked)
•
CSA certified
•
CSA Class I, Division 2, Groups A, B, C, D certified
•
UL listed
•
CE marked for all applicable directives
Installation Instructions
1771Ć5.46
1
The inputs are protected to 35V.
2
Only 8 volts can be placed directly across the input when configured in the current mode.
3
Refer to publication 1770-4.1, "Programmable Controller Wiring and Grounding Guidelines for Noise Immunity."
Word 24 of the block transfer write data table shows the module scan
time for a given configuration. These figures are the time it takes to
sample all channels and process the data.
Table A.A
Scan Time in SingleĆEnded Mode
Numberof Oversamples
Word 24
Time (ms)
0
798
7.98
1
392
3.92
2
451
4.51
4
567
5.67
8
798
7.98
16
1260
12.60
32
2183
21.83
64
4028
40.28
128
7718
77.18
256
15100
151.00
Table A.B
Scan Time in Differential Mode
Numberof Oversamples
Word 24
Time (ms)
0
402
4.02
1
199
1.99
2
229
2.29
4
287
2.87
8
402
4.02
16
634
6.34
32
1096
10.96
64
2018
20.18
128
3864
38.64
256
7554
75.54
Module Scan Time