Rockwell Automation 1746-NI8 SLC 500 Analog Input Modules User Manual User Manual

Page 54

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5–13

Channel Configuration, Data, and Status

Publication 1746Ć6.8 - April 1997

Explanations of the status conditions follow.

Input Type Status (Bits 0-2)

The input type bit field indicates what type of input signal you have
configured for the channel. This field reflects the input type defined
in the channel configuration word. The input field is cleared when
the channel is disabled.

Data Format Type Status (Bits 3-5)

The data format bit field indicates the data format you have defined
for the channel. This field reflects the data type selected in the
channel configuration word. The data format field is cleared when
the channel is disabled.

Open Circuit Type Status (Bits 6 and 7)

The open circuit bit field indicates how you have defined the
response of the module to an open circuit condition. This feature is
active for the 4–20 mA input type only. The open circuit field is
cleared when the channel is disabled.

Channel Filter Frequency (Bits 8-10)

The channel filter frequency bit field reflects the filter frequency you
selected in the configuration word. This feature is active for all
current and voltage input types. The filter frequency bit field is
cleared while the channel is disabled.

Channel Status (Bit 11)

The channel status bit indicates the operational state of the channel.
Once the channel enable bit is set, the module will configure the
channel and take the first data sample of the channel data word
before setting the channel status bit. The channel status bit is cleared
upon power up and reset.

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