Rockwell Automation 1503VC IntelliVAC Plus Contactor Control Module - Manual (Page 127)

9-4 DeviceLogix
1503-UM054C-EN-P – June 2013
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Device Input – A physical input of the device. Device inputs
represent the actual inputs, such as sensors or switches which are
attached to a particular device.
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Network Input – Formerly called Consumed Network Bit
(CNB), network input is data sent from a master that can be used
in the device’s logic.
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Device Status – Status inputs indicate the state of the device. For
example, if an explicit message connection exists between the
device and a master, and input called “explicit connection exists’
is set to true and possibly affects logic the device performs.
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Device Fault – Faults are conditions that report device errors.
For example, if a device detects a short circuit on an output a fault
input is set to true and possibly affects the logic the device
performs.
There are two types of DeviceLogix outputs:
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Device Output – Hardware outputs that are actual outputs, such
as lights and actuators, attached to a particular device. Without
DeviceLogix functionality, the master would normally control the
outputs via consumed data. In fact, if there is no local logic
controlling an output, the master controls the output as it would if
DeviceLogix functionality were not running on the device.
However, within DeviceLogix functionality, if the local logic
controls an output, the master no longer controls the output. The
only way the master can affect the state of an output that is under
local control is to route requests to the local logic by using
network inputs. Some outputs can be under local control while
others can still be controlled by the master.
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Network Output – Formerly called Produced Network Bit
(PNB). Network outputs report the results of the local logic to a
master and are part of the produced data from the device.
Local Function Block Logic
The local logic of a DeviceLogix device consists of function blocks,
inputs, outputs and connections (wires) between them. Function
blocks contain connection points (called pins) and perform a specific
function. Inputs and outputs also have connection pins and represent
the actual hardware devices, networked data, and fault and status bits
that are available for use in the local logic.