Rockwell Automation 1771-OFE/B Analog Output Module User Manual - 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