McQuay Micro Tech Open Protocol Driver Manual | Page 30 of 35 |
Appendix A.7. Advanced Map Descriptor Example 3 – Controlling Bytes per Field – Writing
This example writes to a McQuay device starting at address 4096 (= 0x1000) to 4097incl. The value written to each address location is based on a single value extracted from the FieldServer’s Data Arrays.
The value v0 = (value_extracted_from_DA) AND 0xff
The value v1 = (value_extracted_from_DA shift right by 8) AND 0xff
The driver writes value v0 to address 4096.
The driver writes value v1 to address 4097.
Map_Descriptor_Name | ,Data_Array_Name | ,Data_Array_Offset | ,Node_Name | ,Address | ,Length | ,Bytes_Per_Field | ,Scan_Interval | ,Function |
Chiller1_emulation | ,DA_CHILLER1 | ,0 | ,Chiller1 | ,4096 | ,1 | ,2 | ,1.0s | ,Wrbc |
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Specify the address in decimal
Length must be set to 1 when Bytes_Per_Field is specified.
A value from 1 to 4
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