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Rockwell Automation AADvance Controller Demo Unit User Manual

Page 93

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Document: 553850 Issue 1.2: March 2011

5-27

.DIS BOOL

Discrepancy TRUE:

there is a discrepancy in current greater

than 1% between the channels of two modules in

a redundant configuration (†)

.CF

BOOL

Channel fault

TRUE: module diagnostics detect a fault in the

channel electronics or firmware (state = 7)

.V UINT

Voltage Reports

the channel voltage at the output

terminals, in units of millivolts and with an

accuracy of ± 500mV (††)

.I

INT

Current

Reports the current for the channel in milliamps

and with an accuracy of ± 2mA and ± 10% of

measurement

.STA USINT

Channel state

Reports a state value for the channel:

1 = no vfield

2 = de-energized

3 = no load

4 = energized

5 = short-circuit

6 = field fault

7 = faulted

Note: (†) Discrepancy can only be reported TRUE when two modules are active in a
group. (††) The voltage element cannot report values below 0mV.

The State Variable for Digital Outputs

The state variable for a digital output is an unsigned integer with a value from 1 to 7

representing the following:
1 = no-vfield: the field supply voltage is at or below 18V dc for that channel.

Note: When the state variable is 1, the field voltage () is reported as
0mV.

2 = de-energized: the commanded state is FALSE and the channel is de-energized.
3 = no-load: the controller cannot detect a load connected to the channel field wiring,

or the load is below the minimum required channel load of 10mA when commanded
TRUE.
4 = energized: the commanded state is TRUE and the channel is energized.
5 = short-circuit: the controller has detected a short-circuit condition, irrespective of
the channel drive state.
6 = field fault: an external source is driving the channel to an energized state or a
voltage greater than 18V dc, irrespective of the channel drive state.
7 = faulted.