Rockwell Automation 1769-IT6 Compact I/O 1769-IT6 Thermocouple/mV Input Module - Manual (Page 43)

Rockwell Automation Publication 1769-UM004B-EN-P - March 2010 43
Module Data, Status, and Channel Configuration Chapter 4
Enabling or Disabling a Channel (bit 15)
You can enable or disable each of the six channels individually by using bit 15.
The module scans enabled channels only. 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…12)
This selection configures channels 0…5 to present analog data in any of these
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 2 - Channel Data Word Format
Input
Type
Data Format
Engineering Units x 1 Engineering Units x 10 Scaled-for-PID Raw/
Proportional Data Percent
Range
°C °F °C °F
J -2100…12,000 -3460…21,920 -210…1200 -346…2192
0…16,383 -32,767…32,767 0…10,000
K -2700…13,700 -4540…24,980 -270…1370 -454…2498
T -2700…4000 -4540…7520 -270…400 -454…752
E -2700…10,000 -4540…18,320 -270…1000 -454…1832
R 0…17,680 320…32,140 0…1768 32…3214
S 0…17,680 320…32,140 0…1768 32…3214
B 3000…18,200
5720…32,767
(1) 300…1820 572…3308
N -2100…13,000 -3460…23,720 -210…1300 -346…2372
C 0…23,150
320…32,767
(1) 0…2315 32…4199
±50 mV
-5000…5000
(2)
-500…500
(2)
±100 mV
-10,000…10,000 (2) -1000…1000 (2)
(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.