Owner's manual

Rockwell Automation Publication 1769-UM005B-EN-P - March 2012 53
Module Data, Status, and Channel Configuration Chapter 4
Enabling or Disabling a Channel (Bit 15)
Bit 15 enables or disables each of the six channels individually. The module
only scans those channels that are enabled. Enabling a channel forces it to be
recalibrated before it measures input data. Turning a channel off results in the
channel data being set to zero.
Data Format
Raw/Proportional
000
Engineering Units 001
Engr. Units X 10 100
Scaled-for-PID 010
Percent Range 011
Enable/Disable
Channel
Enable 1
Disable 0
(1) Ignored for a resistance device input.
(2) Valid only with the 0.5 mA excitation current.
(3) Valid only with the 1.0 mA excitation current.
Table 7 - Channel Configuration Bit Definitions
To Select Make these bit settings
1514131211109876543210
TIP
When a channel is not enabled, the A/D converter
provides no input to the controller. This speeds up the
system response of the active channels.
The configuration default is to disable each input channel
to maximize module performance.