Rockwell Automation 1771-IFE , D17716.5.90 USER MNL. ANALOG INPUT Module User Manual
Page 36
Module Configuration
Chapter 4
4-7
Important: Scaling values must always be entered in BCD format,
even if the data format chosen is binary. If scaling is selected for any
channel, all channels must be scaled. If scaling is not required on certain
channels, set those to the default input range: 0 to 4095 for 0 to + voltage
or current ranges, and -4095 to +4095 for - to + voltage or current ranges.
If scaling is not selected, the module requires specific minimum BTR
file lengths for the number of channels used. The BTW file length can
be set to 3 words. Table 4.F shows the required BTW and BTR file lengths.
Table 4.F
Block Transfer Read and Write File Lengths
Channels
Used
BTR File
Length
BTW File
Length
1
5
7
2
6
9
3
7
11
4
8
13
5
9
15
6
10
17
7
11
19
8
12
21
9
13
23
10
14
25
11
15
27
12
16
29
13
17
31
14
18
33
15
19
35
16
20
37
Important: Use decimally addressed bit locations for PLC-5 processors.