Rockwell Automation 1771-N SERIES High Resolution Analog Module User Manual - Manual (Page 60)

4–20 Configuring the Module
Publication 1771ĆUM127B-EN-P - December 2002
Definition
Decimal Bit
(Octal Bit)
Word
Bits 8Ć15
(10Ć17)
Filter time constant. Specifies the time constant of a digital, first order lag filter
on the input in 0.1 second units. Legal values are 0.1 to 10.0 seconds
(binary) or 0.1 to 9.9 (BCD). A value of 0 disables the filter.
Bits 00Ć07
10 ohm offset. Compensates for a resistance offset on a 10 ohm copper
RTD. Range of +0.99 ohms, in units of 0.01 ohms. This field must be 0 for all
other RTDs.
Bits 08Ć10
(10Ć12)
RTD type. Specifies type of RTD linearization on RTD channels:
001 = 100 ohm Pt, European standard;
010 = 100 ohm Pt. US standard;
011 = 10 ohm copper;
100 = 120 ohm nickel.
This field is 0 for nonĆRTD channels.
Word 23
Bit 11 (13) Constant = 0
Word 23
Bits 12Ć15
(14Ć17)
Thermocouple type. Specifies type of TC linearization on TC channels.
0000 = millivolts;
0001 = B;
0010 = E;
0011 = J;
0100 = K;
0101 = R;
0110 = S;
0111 = T;
1000= C (1771ĆNT2 only),
1001= N (1771ĆNT2 only).
This field must be 0 for nonĆthermocouple channels.
The above group of words would be repeated for each of the
remaining five input channels. The bit/word descriptions would be
identical for each of those channels.
Refer to the Appendix specific to your module for block transfer
write configurations to be used with your module.
In this chapter you learned how to configure your module’s
hardware, condition your inputs and enter your data.
Chapter Summary