Configuring The Module And Setting Outputs With Block Transfer Write Instructions - AB Quality ALLEN-BRADLEY 1791 User Manual

Configuring the Module and
Setting Outputs with Block
Transfer Write Instructions
Decimal 15 14 13
Octal 17 16 15
0 Module Mode
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
You must configure your block module by performing a block transfer
write (BTW) instruction from the programmable controller to the module.
Each input can be independently configured in one BTW.
Maximum length of the BTW is 27 words (0 thru 26). When configuring
the module, first send the complete BTW. You can shorten the BTW to 3
words for subsequent write operations if parameters for each channel
remain the same.
Block transfer write data is shown in Figure 4.2.
Figure 4.2
Block Transfer Write for Analog Block I/O
12 11 10 09 08
14 13 12 11 10
Scaling Range
Output Channel 0 Data
Output Channel 1 Data
Output Channel 0 Minimum Scaling
Output Channel 0 Maximum Scaling
Output Channel 1 Minimum Scaling
Output Channel 1 Maximum Scaling
Input Channel 0 Minimum Scaling
Input Channel 0 Maximum Scaling
Input Channel 1 Minimum Scaling
Input Channel 1 Maximum Scaling
Input Channel 2 Minimum Scaling
Input Channel 2 Maximum Scaling
Input Channel 3 Minimum Scaling
Input Channel 3 Maximum Scaling
Input Channel 0 Low Alarm Level
Input Channel 0 High Alarm Level
Input Channel 0 Alarm Deadband
Input Channel 1 Low Alarm Level
Input Channel 1 High Alarm Level
Input Channel 1 Alarm Deadband
Input Channel 2 Low Alarm Level
Input Channel 2 High Alarm Level
Input Channel 2 Alarm Deadband
Input Channel 3 Low Alarm Level
Input Channel 3 High Alarm Level
Input Channel 3 Alarm Deadband
Chapter 4
Analog Block Applications Using
Block Transfers
07 06 05 04
07 06 05 04
Alarm Enable
03 02 01 00
03 02 01 00
Filter
4-3