Rockwell Automation 1769-OF4 Compact Analog Output Module - Manual (Page 41)

Publication 1769-UM020A-EN-P - December 2009 41
Module Data, Status, and Channel Configuration Chapter 3
Engineering Units
The value sent by the controller to the output channel is the actual
current or voltage value for the selected output range. The resolution
of the engineering units is 0.001V or 0.001 mA per count.
Scaled-for-PID
The value sent by the controller to the output channel is a signed
integer with 0 representing the lower limit of the normal operating
range and 16,383 representing the upper limit of the normal operating
range. Allen-Bradley controllers, such as the MicroLogix 1500
controller, use this range in their PID equations. The amount over and
under the normal operating range (the full-scale range) is also
supported.
Percent Range
The value sent by the controller to the output channel is presented as
a percentage of the normal operating range selected for that output
channel. For example, 0…10V DC equals 0…100%. The resolution of
the percent range is 0.01% per count. The amount over and under the
normal operating range (the full-scale range) is also supported.
Valid Output Data Word Formats/Ranges
This table shows the valid formats and minimum/maximum data
ranges provided by the module.
Valid Output Data
Normal
Operating
Output Range
Full Range
(1)
Raw/
Proportional
Data
Engineering
Units
(2)
Scaled-for-PID Percent Range
(3)
Full Range
Full Range Normal
Operating
Range
Full Range
Normal
Operating
Range
Full Range
-10…10V DC -10.5…10.5V
-32,767…
32,767
-10,500…10,500
0…16,383
-410…16,793 -10,000…
10,000 -10,500…10,500
0…5V DC -0.5…5.25V -500…5,250 -1638…17,202
0…10,000
-1000…10,500
0…10V DC -0.5…10.5V -500…10,500 -819…17,202 -500…10,500
1…5V DC 0.5…5.25V 500…5,250 -2048…17,407 -1250…10,625
0…20 mA 0…21 mA 0…21,000 0…17,202 0…10,500
4…20 mA 3.2…21 mA 3,200… 21,000 -819…17,407 -500…10,625
(1) Includes amounts over and under normal operating range.
(2) 1 count = 0.001V or 0.001 mA.
(3) 1 count = 0.01%.