Delta Controls eZFC-424R4-24, Инструкция по применению

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eZFC-424R4-24 Application Guide
Edition 2.6 Page 17 of 84
Trend Log Monitored Object
3 CurrentCoolSetpoint (AV801)
4 HeatCoolLoad (AV802)
5 User-defined
6 User-defined
7 User-defined
8 User-defined
The enteliZONE trend logs also support Historian archiving. The enteliZONE controllers don’t
support buffer full notification events so make sure the Historian update interval is frequent enough
to avoid missing samples.
Programming
In the programmable controller, the 3 programs that exist alongside the configurable algorithm
allow you to either create your own custom algorithm or override portions of the configurable
algorithm to suit your needs. The maximum size of each program is 5 KB.
The programmable controller also allows you to create new I/O, AV, BV and MV objects in the 900-
999 range for use in your custom program.
Supported GCL+ Programming Functions, Statements and Operators
The Call Statement is not used in the programmable enteliZONE controllers. Unlike other
programmable Delta Controls controllers, the 3 programs in the programmable enteliZONE
controllers are automatically scanned. The scan rate is also designed to be a constant 10
scans/second.
A list of supported and unsupported GCL+ functions and statements for the enteliZONE
programmable controllers is recorded in KBA 2137 on the George Support web site. The
ORCAview and enteliWEB GCL editors are not aware of these limitations, so using an
unsupported function in an enteliZONE programmable controller will not register a syntax error in
these GCL editors.
Overwriting the Algorithm
You can overwrite the algorithm by programming specific objects numbered in the 800 range. For
example, if you want to change how the algorithm determines the occupancy state, you could write
your own GCL+ program to set the occupancy MV800 state.
Your program must write more frequently than every 5 seconds else the factory algorithm will
recapture control.