Configuration word – Rockwell Automation 1771-OFE/B Analog Output Module User Manual User Manual
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Publication 1771Ć6.5.30 - November 1998
Word 5 of the block transfer write is the module configuration word
(Figure 3.1). It contains information on:
•
data polarity
•
scaling polarity
•
data format
Figure 3.1
Configuration Block Transfer Write Word 5
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
Word5
4
4
3
3
2
2
1
1
4
3
2
1
Data Format
Reserved
1 = Binary
0 = BCD
Maximum Scaling Value Polarity
1 = Negative
0 = Positive
Minimum Scaling Value Polarity
1 = Negative
0 = Positive
Data Sign Polarity
1 = Negative
0 = Positive
4 = Channel 4
3 = Channel 3
2 = Channel 2
1 = Channel 1
12883
Table 3.A
Bit/Word Descriptions for Configuration Block Transfer Write
Word 5
Word
Decimal Bit
(Octal Bit)
Description
00Ć03
Data polarity bits. When set (1), indicate negative data. When reset (0), indicate
positive data. Bit 00 corresponds to channel 1, bit 01 to channel 2, etc.
04
When set (1), indicates negative minimum scaling value for Channel 1. When
reset (0), indicates positive minimum scaling value for channel 1.
5
05
When set (1), indicates negative maximum scaling value for Channel 1. When
reset (0), indicates positive maximum scaling value for channel 1.
5
06
When set (1), indicates negative minimum scaling value for Channel 2. When
reset (0), indicates positive minimum scaling value for channel 2.
07
When set (1), indicates negative maximum scaling value for Channel 2. When
reset (0), indicates positive maximum scaling value for channel 2.
08 (10)
When set (1), indicates negative minimum scaling value for Channel 3. When
reset (0), indicates positive minimum scaling value for channel 3.
Configuration Word