Rockwell Automation 1771-N SERIES High Resolution Analog Module User Manual - Manual (Page 100)

Block Transfer Write and Block Transfer Read Configurations for 8 Output/0 Input 1771-N Series Modules C–4
Publication 1771ĆUM127B-EN-P - December 2002
Definition 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.
Word 9
Bit 01 Temperature scale. 0 = Celsius, 1 = Fahrenheit
Bit 02
BCD select. 1 = all values in BCD format. All values are then
entered in the selected format. If the field is a signed field, the
most significant digit represents the sign.
Bits 03-15
(03-17)
Not used. Always 0.
Word 10
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 11
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 12
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 13
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 14
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.
Word 15
Bit 12 (14) Constant = 0
Word 15
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.
Word 15 continued 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 16
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.
Words 17 thru 22 Same as words 11 thru 16 but for channel 2.
Words 23 thru 28 Same as words 11 thru 16 but for channel 3.
Words 29 thru 34 Same as words 11 thru 16 but for channel 4.
Words 35 thru 40 Same as words 11 thru 16 but for channel 5.