Rockwell Automation 1769-L23E-QB1B_L23E-QBFC1B_L23-QBFC1B CompactLogix Packaged Controllers Quick Start and User Manual - Manual (Page 206)

206 Publication IASIMP-QS010B-EN-P - October 2009
Chapter 3 Embedded I/O
Analog I/O Tag Descriptions
Tag Name Description
Local:3:I Tags that contain analog input data.
Local:3:I.Fault The bits of this word are set to 1 (ON) if a fault occurs
with the analog I/O
(1)
.
(1) For example, this data is at 1 (ON) if the analog I/O terminal block is removed from the packaged controller
while the controller is in Run mode.
Local:3:I.Ch0Data Channel input data for channel 0.
Local:3:I.Ch1Data Channel input data for channel 1.
Local:3:I.Ch2Data Channel input data for channel 2.
Local:3:I.Ch3Data Channel input data for channel 3.
Local:3:I.InputRangeFlag Indicate the range status of the input signal by
channel.
Local:3:I.Ch0InputOverRange
Indicates if the input channel is over range.
(2)
(2) The operating range of the analog inputs is voltage 0…10V DC or current 0…20 mA. The input range is
dependent upon the wiring option you use.
Local:3:I.Ch1InputOverRange
Indicates if the input channel is over range.
(2)
Local:3:I.Ch2InputOverRange
Indicates if the input channel is over range.
(2)
Local:3:I.Ch3InputOverRange
Indicates if the input channel is over range.
(2)
Local:3:I.OutputRangeFlag Indicate the range status of the output signal by
channel.
Local:3:I.Ch0OutputOverRange Indicates if the output channel is over range. (3)
(3) The operating range of the analog outputs is voltage 0…10V DC or current 0…20 mA. The output range is
dependent upon the wiring option you use.
Local:3:I.Ch1OutputOverRange Indicates if the output channel is over range. (3)
Local:3:I.Ch0DataInvalid Indicates if 1 (ON) data is being written to bits 0…6
or bit 15 of this channel.
(4)
(4)
Bits 0…6 and bit 15 of both output data channels (Ch0Data and Ch1Data) should always be set to 0 in your
control program. If they are not set to 0, the corresponding DataInvalid tag is set for that channel. While the
DataInvalid tag indicates the 1 (ON) data for the specified bits, the channel will continue to operate with the
previously converted channel value. For more information about the data specific to these bits, see the
Compact 8-Bit Low Resolution Analog I/O Combination Module User Manual, publication
1769-UM008 .
Local:3:I.Ch1DataInvalid Indicates if 1 (ON) data is being written to bits 0…6
or bit 15 of this channel.
(4)
Local:3:I.Ch0Readback Data echo values of the analog output channels.
Local:3:I.Ch1Readback Data echo values of the analog output channels.
Local:3:O Analog output channel data.
Local:3:O.Ch0Data Analog output data value for channel 0.
Local:3:O.Ch1Data Analog output data value for channel 1.