Bit/word descriptions, Module configuration chapter 5 – Rockwell Automation 1771-IXHR , D17716.5.80 HIGH RESOL.THERMOCOUPLE User Manual
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Module Configuration
Chapter 5
5Ć6
Bit/word descriptions of BTW file words 1 thru 3 (configuration), 4 thru 19
(channel alarm values), and 20 thru 27 (calibration values) are presented in
Table 5.D. Enter data into the BTW instruction after entering the instruction into
your ladder diagram program.
Table 5.D
Bit/Word Definitions for the High Resolution Thermocouple/Millivolt Input
Module
Word
Bits
Description
Word 1
bits 00-02
Input type codes for inputs 1 thru 8 (or 1 thru 4 if bit 06 is set to 1).
Tells the module what type of input device you connected to the
module.
Type
02
01
00
Millivolt input
0
0
0
"B" thermocouple
1
1
1
"E" thermocouple
0
0
1
"J" thermocouple
0
1
0
"K" thermocouple
0
1
1
"R" thermocouple
1
0
1
"S" thermocouple
1
1
0
"T" thermocouple
1
0
0
bits 03-05
Input type codes for inputs 5 thru 8 (bit 06 must be set to 1). Tells the
module what type of input device you connected to inputs 5 thru 8.
Type
05
04
03
Millivolt input
0
0
0
"B" thermocouple
1
1
1
"E" thermocouple
0
0
1
"J" thermocouple
0
1
0
"K" thermocouple
0
1
1
"R" thermocouple
1
0
1
"S" thermocouple
1
1
0
"T" thermocouple
1
0
0
bit 06
When set to 0 bits 00-02 define input type for all channels.
When set to 1 bits 00-02 defines input type for channels 1-4,
and bit 03-05 defines input type for channels 5-8.
bit 07
Enables X10 magnification when millivolt inputs have been selected.
Enabling this feature causes the BTR data to display +30.000mV
around the value selected by word 2. Use the digital filter (word 3) to
stabilize the readings when using this mode.
bit 08
Temperature scale bit, when set, reports temperature in
o
F; when
reset, in
o
C. The module ignores this bit for millivolt inputs.
Bit/Word Descriptions