Rockwell Automation 1771-N SERIES High Resolution Analog Module User Manual - Manual (Page 135)

Block Transfer Write and Block Transfer Read Configurations for 3 Output/5 Input 1771-N Series Modules G–3
Publication 1771ĆUM127B-EN-P - December 2002
00 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 Word/Dec. Bit
00 01 02 03 04 05 06 07 10 11 12 13 14 15 16 17 Word/Octal Bit
49
Alarm
enable
Rate Alarm: Scaled Units per second
50 Filter Time Constant: 0.1 second units Alarm Deadband
51 Thermocouple Type 0 RTD Type 10 Ohm Offset: 0.01 Ohm units
Channel 8 Programming
52 Low Scale Value
53 High Scale Value
54 Low Alarm Value
55 High Alarm Value
56
Alarm
enable
Rate Alarm: Scaled Units per second
57 Filter Time Constant: 0.1 second units Alarm Deadband
58 Thermocouple Type 0 RTD Type 10 Ohm Offset: 0.01 Ohm units
Block Transfer Write Bit/Word Descriptions for 3 Output/5 Input
Modules
Word
Decimal Bit
(Octal Bit)
Definition
00-03 Constant = 0
Bits 04-07 Number of outputs = 0011 binary
Word 0 Bits 08-13
(10-15)
Constant = 00 1000 binary
Bits 14-15
(16-17)
Block transfer write type = 10 binary
Word 1
Bits 00-15
(00-17)
First Output channel data
Word 2
Bits 00-15
(00-17)
Second Output channel data
Word 3
Bits 00-15
(00-17)
Third Output channel data
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 4
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.