Rockwell Automation 1771-N SERIES High Resolution Analog Module User Manual - Manual (Page 107)

Block Transfer Write and Block Transfer Read Configurations for 2 Output/2 Input 1771-N Series Modules D–3
Publication 1771ĆUM127B-EN-P - December 2002
Definition
Decimal Bit
(Octal Bit)
Word
Bit 00
Verify. If this bit is set to 1, the module will compare its current
programming with the programming downloaded in the BTW. If
they are the same, it will verify good; if they are different, the
module will verify bad. In no case will any programming data in
the BTW be applied to the module.
Bit 01 Temperature scale. 0 = Celsius, 1 = Fahrenheit
Word 3
Bit 02
BCD select. 1 = all values in BCD format.
0 = all values in 2's complement binary
Bits 03-14
(03-16)
Not used. Always 0
Bit 15 (17)
CJ alarm enable. A value of 1 enables over and underrange
indication for the cold junction channel. If the module does not
have a cold junction channel, this bit is 0.
Word 4
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 5
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 6
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 7
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 8
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%.
Word 9
Bit 12 (14) Constant = 0
Word 9
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 10
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 11 thru 16 Same as words 5 thru 10 but for channel 2.
Word 17
Bits 00-15
(00-17)
Low scale value for channel 3.