Changing the first characters containing keywords of the parameter description
should be considered an incompatible change. If the port direction is changed,
e.g. from INOUT to IN, then the parameter must be
reconnected
in the function
designer applications after the changed instances are downloaded.
Section 3 Parameter Interface
Parameters with Special Purposes
3BSE042835-600
33
Parameter description starts with
“IN”
-->
IN
port
Parameter description starts with “OUT”
-->
OUT port
Parameter description starts with any other string -->
INOUT port
Range Checking Description
Table 5. Example of description for range checking in a Function Block Type
Name
Data type Attributes Direction
Initial
value
Description
AEConfig dint
retain
IN
1
Config (0=None, 1=Alarm,
2=Event, 3=Event1,
4=Indication, Else Alarm +
ParErr)
A real, integer, or word input parameter may have a range. In that case the parameter
description shall also state the range, the action for valid input values, and the action
for out-of-range values (see description field in
). This is mandatory for
objects that are to be SIL classified.
Parameters with Special Purposes
This sub section describes the most frequent parameters and their usage.
Name
The Name parameter is a string of 30 characters, holding the instance name. The
Name parameter is used for several purposes:
•
When performing a Name Upload in the Control Structure (Plant Explorer), the
instances' Name parameter is passed to the corresponding Name aspects.
Summary of Contents for AC 800M
Page 2: ......
Page 3: ...AC 800M Library Object Style Guide System Version 6 0...
Page 12: ...Related Documentation About This User Manual 12 3BSE042835 600...
Page 18: ...Naming Convention Section 1 Libraries 18 3BSE042835 600...
Page 108: ...SIL Mark Restrictions Section 6 Program Code Issues 108 3BSE042835 600...
Page 116: ...Standard Library Parameters Appendix A Names and Abbreviations 116 3BSE042835 600...
Page 119: ......