Configuring your output module, Chapter, What this chapter contains configuring your module – Rockwell Automation 1771-OFE/B Analog Output Module User Manual User Manual
Page 27
Chapter
3
Publication 1771Ć6.5.30 - November 1998
Configuring Your Output
Module
In this chapter, you will read about:
For information on
See page
Configuring Your Module . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1
Configuration Word . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-3
Default Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-4
Data Format . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-4
Scaling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-6
Procedure for Configuring Your Module . . . . . . . . . . . . . . . . . 3-9
Because of the many analog devices available and the wide variety
of possible applications, you must configure the module to conform
to the analog device and specific application that you have chosen.
You do this with a block transfer write instruction (BTW). The write
block can be up to 13 words long and contains output data and
information on data format and scaling.
Word Assignment for Block Transfer Write
Word/Dec. Bit
15
14
13
12
11
10
09
08
07
06
05
04
03
02
01
00
Word/Octal Bit
17
16
15
14
13
12
11
10
07
06
05
04
03
02
01
00
1
Channel 1 Data Value
2
Channel 2 Data Value
3
Channel 3 Data Value
4
Channel 4 Data Value
5
Data Format
Reserved
Minimum/Maximum ScalingValue Polarity
Data Polarity
6
Channel 1 Minimum ScalingValue
7
Channel 1 Maximum ScalingValue
8
Channel 2 Minimum ScalingValue
9
Channel 2 Maximum ScalingValue
10
Channel 3 Minimum ScalingValue
11
Channel 3 Maximum ScalingValue
12
Channel 4 Minimum ScalingValue
13
Channel 4 Maximum ScalingValue
Important: A block transfer write length of 0 will result in a default
length of 13. A block transfer read length of 0 will
result in a default length of 5.
What This Chapter
Contains
Configuring Your Module