Rockwell Automation 1771-N SERIES High Resolution Analog Module User Manual User Manual
Page 56
4–16
Configuring the Module
Publication 1771ĆUM127B-EN-P - December 2002
Bit/Word Description of Word 0
Word
Bit
Definition
Word 0
00Ć03
Constant = 0
Bits 04Ć07
Number of outputs = 0010
Bits 10Ć15
Constant = 00 1000
Bits 16Ć17
Block transfer write type = 10
The next group of words sets the outputs of the module, if the
module has outputs. For example, if this is a 2 output/6 input
module, words 1 and 2 would contain the data for the two output
channels. If the module has four outputs, words 1 thru 4 would
contain output channel data.
Output Configuration Words 1 and 2
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 Output Data
2
Channel 2 Output Data
Bit/Word Description of Output Configuration Words 1 and 2
Word
Decimal Bit
(Octal Bit)
Definition
Word 1
Bits 00Ć15 (00Ć17)
First Output channel data
Word 2
Bits 00Ć15 (00Ć17)
Second Output channel data
Additional module configuration data is contained in the next two
words. This includes verify, temperature scale, BCD select, cold
junction alarm enable and real time sample time. These are explained
in the bit/word description.
Output Configuration Words 3 and 4
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
3
CJ alarm
enable
Unused = 0
BCD
select
Temp
scale
Verify
4
RTS Sample Time: 1 millisecond units