Rockwell Automation 1797-IRT8 FLEX Ex Thermocouple/RTD/mV Input Module User Manual User Manual
Page 48
Publication 1797-6.5.2 - February 2001
4-10 Input, Status, Output and Configuration Files for the Thermocouple/RTD/mV Module on the ControlNet Network
Configuration
Word
Dec. Bits
(Octal Bits)
Description
Configuration
Word 0
Bits 00-02
Input Filter Cutoff bits
Bit
02
01
00
Definition
0
0
0
Hardware filtering only (default filtering)
0
0
1
40Hz
(25ms)
0
1
0
10Hz
(100ms)
0
1
1
4Hz
(250ms)
1
0
0
2Hz
(500ms)
1
0
1
1Hz
(1s)
1
1
0
0.5Hz
(2s)
1
1
1
0.2Hz
(5s)
Bits 03-05
Reference Junction – used when input type is set to thermocouple and sensor mode is set to Fixed
Temperature Compensation. Sets a fixed reference junction to compensate all thermocouple channels.
Bit
05
04
03
Reference Junction
0
0
0
0°C
0
0
1
20°C
0
1
0
25°C
0
1
1
30°C
1
0
0
40°C
1
0
1
50°C
1
1
0
60°C
1
1
1
70°C
Bits 06-07
Fault Mode bits – when a bit is set (1), fault mode is enabled for that channel. Bit 06 corresponds to
channels 0-3; bit 07 corresponds to channels 4-7.
0 = disabled
1 = enable wire-off detection
Bits 08-11
(10-13)
Data format – module defaults to –4000 to 10000 in millivolt mode, and 0 to 5000 in ohms mode
Bit
11
10
09
08
Data type for channels 0-7
0
0
0
0
°C
0
0
0
1
°F
0
0
1
0
°
K
0
0
1
1
–32767 to +32767
0
1
0
0
0 to 65535
0101 through 1111 not used
Bits 12-15
(14-17)
Not used