User guide

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NT® INTEGRATED FLOW CONTROLLER WITH DEVICENET™ COMMUNICATION USER GUIDE
Table 1. Object Model
OBJECT CLASS OPTIONAL/REQUIRED # OF INSTANCES
Identity Required 1
Message router Required 1
DeviceNet™ Required 1
Connection Required at least 1 I/O and 1 explicit
Assembly Required at least 1 input and 1 output
S-Device supervisor Required 1
S-Sensor calibration Optional 0 or more
S-Analog sensor Required 2
S-Analog actuator Required 1
S-Single stage controller Required 1
DeviceNet
TM
Communication Integrated Flow
Controller Device
Device Type: 00
hex
This vendor specific device profile
is based on the DeviceNet
TM
Fluid
Flow Controller (FFC) device profile.
The device type is 00 due to the pre-
release status of the FFC profile.
Type 00 is a Generic Device type.
A Fluid Flow Controller (FFC) is a
device that measures and controls
the flow rate of a fluid (liquid or
gas). It contains three principle com-
ponents: a flow rate sensor that can
be a virtual sensor based on other
sensors, for example pressure; a fluid
flow metering valve that can be actu-
ated by one of a variety of actuator
types, including, for example, sole-
noid or a stepper motor; and, a con-
troller that closes the loop by receiv-
ing a set point and driving the actua-
tor such that the fluid flow rate is
controlled to the set point.
This chapter contains two primary
sections. First, the device profile is
specified as it appears in general
DeviceNet
TM
specification. Second,
the vendor specific attributes, ser-
vices, behaviors, ranges and capabili-
ties are specified.
Object Model
The Object Model in Table 1 repre-
sents an FFC Device. The table below
indicates:
• The object classes present in
this device
• Whether or not the class is
required
• The number of instances present
in each class
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