Rockwell Automation 1771-N SERIES High Resolution Analog Module User Manual - Manual (Page 126)

Block Transfer Write and Block Transfer Read Configurations for 1 Output/7 Input 1771-N Series Modules F–4
Publication 1771ĆUM127B-EN-P - December 2002
Definition
Decimal Bit
(Octal Bit)
Word
Word 3
Bits 00-15
(00-17)
Real time sample. Sample time in milliseconds. 0 = off.
RTS minimum is 100msec (counts = 100). Maximum 10
seconds in binary; 9.999 seconds in BCD.
Word 4
Bits 00-15
(00-17)
Low scale value for channel 1. Scale values are limited to
+32767 in binary format; +7999 in BCD format.
Word 5
Bits 00-15
(00-17)
High scale value for channel 1. Scale values are limited to
+32767 in binary format; +7999 in BCD format.
Word 6
Bits 00-15
(00-17)
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 7
Bits 00-15
(00-17)
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.
Bits 00-11
(00-13)
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 scaled range of the module. Legal values
are from 1 to 200%.
Bit 12 (14) Constant = 0
Word 8
Bits 13-14
(15-16)
Reset state. This field controls what the channel will output if
the I/O reset line is asserted:
00 binary = last state;
01 binary = minimum output; (example: < -10V, < 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 9
Bits 00-15
(00-17)
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.
Word 10
Bits 00-15
(00-17)
Low scale value for channel 2.
Word 11
Bits 00-15
(00-17)
High scale value for channel 2.
Word 12
Bits 00-15
(00-17)
Low alarm value for channel 2.
Word 13
Bits 00-15
(00-17)
High alarm value for channel 2.
Word 14
Bits 00-14
(00-16)
Rate alarm. If the channel's input changes at a rate faster than
this value and the alarm enable bit is set, the channel will
indicate a rate alarm condition. Legal values are from 0.05 to
50% of full scale per second.
Bit 15 (17)
Alarm enable bit. If set to 1, the module will report high alarm,
low alarm, underrange, overrange, and rate alarm conditions. If
0, these warnings are suppressed.