Rockwell Automation 1762-IT4 Thermocouple/mV Input Module - Manual (Page 36)

Publication 1762-UM002A-EN-P - July 2002
3-6 Module Data, Status, and Channel Configuration
Enabling or Disabling a Channel (Bit 15)
You can enable or disable each of the four channels individually using
bit 15. The module only scans enabled channels. Enabling a channel
forces it to be recalibrated before it measures input data. Disabling a
channel sets the channel data word to zero.
Selecting Data Formats (Bits 14 through 12)
This selection configures channels 0 through 3 to present analog data
in any of the following formats:
•
Raw/Proportional Data
•
Engineering Units x 1
•
Engineering Units x 10
•
Scaled for PID
•
Percent Range
TIP
When a channel is not enabled (0), no input is
provided to the controller by the A/D converter.
This speeds up the response of the active channels,
improving performance.
Table 3.1 Channel Data Word Format
Input
Type
Data Format
Engineering Units x1 Engineering Units x10
Scaled-for-PID
Raw/Proportion
al Data
Percent
Range °C °F °C °F
J -2100 to +12000 -3460 to +21920 -210 to +1200 -346 to +2192 0 to +16383 -32767 to +32767 0 to +10000
K -2700 to +13700 -4540 to +24980 -270 to +1370 -454 to +2498 0 to +16383 -32767 to +32767 0 to +10000
T -2700 to +4000 -4540 to +7520 -270 to +400 -454 to +752 0 to +16383 -32767 to +32767 0 to +10000
E -2700 to +10000 -4540 to +18320 -270 to +1000 -454 to +1832 0 to +16383 -32767 to +32767 0 to +10000
R 0 to +17680 +320 to 32140 0 to +1768 +32 to 3214 0 to +16383 -32767 to +32767 0 to +10000
S 0 to +17680 +320 to 32140 0 to +1768 +32 to 3214 0 to +16383 -32767 to +32767 0 to +10000
B +3000 to 18200
+5720 to 32767
(1) +300 to 1820 +572 to 3308 0 to +16383 -32767 to +32767 0 to +10000
N -2100 to +13000 -3460 to +23720 -210 to +1300 -346 to +2372 0 to +16383 -32767 to +32767 0 to +10000
C 0 to +23150
+320 to 32767
(1) 0 to +2315 +32 to 4199 0 to +16383 -32767 to +32767 0 to +10000
±50 mV
-5000 to +5000
(2)
-500 to +500
(2) 0 to +16383 -32767 to +32767 0 to +10000
±100 mV -10000 to 10000 (2)
-1000 to 1000
(2) 0 to +16383 -32767 to +32767 0 to +10000
(1) Type B and C thermocouples cannot be represented in engineering units x1 (°F) above 3276.7 °F; therefore, it will be treated as an over-range error.
(2) When millivolts are selected, the temperature setting is ignored. Analog input date is the same for °C or °F selection.