User Manual Owner's manual

Publication 1757-UM006A-EN-P - May 2002
7-8 Using the 1788-CN2FF, ControlNet-to-FOUNDATION Fieldbus H1 Linking Device
ControlNet AO object has the attributes and access rules shown in
Table 7.B.
The BkCalStatus is created only when the controller is capable of
participating in the CAScade initialization handshake and when the
BKCAL_OUT of the AO block is wired to a BKCAL_INx parameter of
the MAO block.
Only Value, CNStatus, casInstatus, ReadBack, and TagDesc are created
when an MAO is connected to something other than an AO function
block CAS_IN parameter.
Table 7.B ControlNet Analog Output Object Attributes
Attribute
Number
Name Ty pe Access
Initial
Value
Remarks
3 Value Float Set 0 This is written from the ControlNet
side.
4 CNStatus Boolean Set Bad ControlNet status. 0-Good; 1-Bad.
11 FailStateValue Float Set 0 The linking device writes the value to
the AO block when this attribute is
changed by the controller.
151 TagDesc String Get As
configured
Tag of the Fieldbus function block that
this object instance represents.
152 FailstateTime Float Set 0 The linking device writes the value to
the AO block when this attribute is
changed by the controller.
153 ReadBack Float Get 0 This represents the BKCAL_OUT value
from the AO block.
154 BkCalStatus uint8 Get Bad:Not-
Connected
This represents the status of the
Readback attribute.
155 casInstatus uint8 Set Bad:Not-
connected
This represents the status of the
CAS_IN to the AO block.