Rockwell Automation 1771-N SERIES High Resolution Analog Module User Manual - Manual (Page 146)

Block Transfer Write and Block Transfer Read Configurations for 4 Output/4 Input 1771-N Series Modules H–4
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 5
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 6
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 7
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 8
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 9
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 10
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% of full scale/second.
Bit 12 (14) Constant = 0
Word 11
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 12
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 13 thru 18 Same as words 7 thru 12 but for channel 2.
Word 19 thru 24 Same as words 7 thru 12 but for channel 3.
Word 25 thru 30 Same as words 7 thru 12 but for channel 4.
Word 31
Bits 00-15
(00-17)
Low scale value for channel 5.
Word 32
Bits 00-15
(00-17)
High scale value for channel 5.
Word 33
Bits 00-15
(00-17)
Low alarm value for channel 5.
Word 34
Bits 00-15
(00-17)
High alarm value for channel 5.