Rockwell Automation 1771-N SERIES High Resolution Analog Module User Manual User Manual
Page 58
4–18
Configuring the Module
Publication 1771ĆUM127B-EN-P - December 2002
Bit/Word Description of Output Configuration Words 5 through 10
Word
Decimal Bit
(Octal Bit)
Definition
Word 5
Bits 00Ć15
(00Ć17)
Low scale value for channel 1. Scale values are limited to
+32767 in binary format; +7999 in BCD format.
Word 6
Bits 00Ć15
(00Ć17)
High scale value for channel 1. Scale values are limited to
+32767 in binary format; +7999 in BCD format.
Word 7
Bits 00Ć15
(00Ć17)
Low clamp value for channel 1. The channel output will not be
allowed to go below this value (in scaled units) regardless of
the data sent to the module. Clamp values are limited to
+32767 in binary format; +7999 in BCD format.
Word 8
Bits 00Ć15
(00Ć17)
High clamp value for channel 1. The channel output will not be
allowed to go above this value (in scaled units) regardless of
the data sent to the module. Clamp values are limited to
+32767 in binary format; +7999 in BCD format.
Word 9
Bits 00Ć11
(00Ć13)
Maximum ramp rate. If this field is not 0, the module will limit
the maximum rate of change for this channel to be a
percentage of the full scale range of the module. Legal values
are from 1 to 200%.
Bit 12 (14)
Constant = 0
Word 9
continued
Bits 13Ć14
(15Ć16)
Reset state. This field controls what an output channel will go
to if the I/O reset line is asserted:
00 binary = last state;
01 binary = minimum output; (example: < Ć10V, < 4mA)
10 binary = maximum output; (example: > 10V, > 22mA)
11 binary = user reset value.
Bit 15 (17)
Alarm enable. If set to 1, the module reports high clamp, low
clamp and rate limit. If 0, these warnings are suppressed.
Word 10
Bits 00Ć15
(00Ć17)
Reset value. If the user selects the channel to go to a user
reset value upon I/O reset, the value in scaled units is entered
here. Otherwise, set to 0.
The above six words of output channel-specific information would
be repeated for the next output channel (2), as shown below. The
bit/word descriptions would be the same as above.
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
Channel 2 Programming
11
Low Scale Value
12
High Scale Value
13
Low Clamp Value
14
High Clamp Value
15
Alarm
enable
Reset State
0
Maximum Ramp Rate, % of Full Scale per second
16
Reset Value