Spectrum-controls 2080sc-BAC Manuel d'utilisateur télécharger pdf (Page 32)

3-14 Chapter 3: Configuring the Module

User’s Manual Pub. 0300274-01 Rev. A.0

The first step is to create Local Variables for the Main program.

The second step is to paste in the structured text generated by the Module

configuration user interface to the Main program of the CCW. Below is an

example of this Main program.

A variable called tag1 is converted to ULINT variable bacnet_convert_var

and then placed at offset 0 of the byte array table because you are writing

AnalogInput 0. If it is AnalogInput 1, the offset will be 8 as each BACNET

object instance takes 8 bytes. Variable bacnet_convert_mode is 1. This means

this is a write operation. 0 identifies a read operation:

(* 0, AnalogInput, aiaaa *)

bacnet_convert_var := ANY_TO_ULINT(tag1);

bacnet_convert_offset := 0;

bacnet_convert_mode := 1;

bacnet_convert_fn(bacnet_convert_offset,

bacnet_convert_var, bacnet_convert_mode);

(* Write Input Table to Module *)

bacnet_module_address := 112;

bacnet_module_datalen := 8;

bacnet_module_write_fn(TRUE, BACNET_MODULE_SLOT,

bacnet_module_address, bacnet_module_datalen,

bacnet_convert_fn.bac_raw_tbl);

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Spectrum-controls 2080sc-BAC Manuel d'utilisateur Page 32