FieldServer FS-8704-49 Appendix E.3. Starting/Stopping DAP devices, Appendix E.4. DAP Unit Errors

FS-8700-49_Data_Aire_DAP Page 41 of 48

Appendix E.3. Starting/Stopping DAP devices

The DAP-Config command is an exception to the above notes. A read is not required. The DAP Config command is used to turn off/on DAP units. The Command uses two consecutive array elements. The first is the zone, the second is the inhibit command. Valid zones are 0-63.

If any inhibit bit (bits 0-5) is set then the unit will not run. If bits 0 to 5 are off then the unit will run. Bits 6& 7 are used for display only on the DAP panel.

0x01 - Inhibit Cooling

0x02 - Inhibit Heating

0x04 - Inhibit Humid

0x08 - Inhibit Dehumidification

0x10 - Inhibit fan

0x20 - Reserved

0x40 - Network Standby - Display on panel (only has no effect on unit) 0x80 - Network off inhibit is active - display only - no effect on operation

This function should be used as a wrbc/x. When the driver encounters this command it reads the associated Data Array, loads the two elements found at the array offset into the message and transmits the message. The driver does not set any Data Array elements to confirm that the command concluded successfully.

Additional information is provided in Appendix B.10

Appendix E.4. DAP Unit Errors

Dap-Stat Query

The following table provides information on the storage of errors obtained in response to the Dap-Stat Query. Note that the errors are stored two ways – One storage method stores 8 alarm bits at a time in a single array element (stored as byte values) – The other method stores each alarm at a different location in the Data Array.

			Location in	Location in Data
			Data Array	Array (Absolute
Byte	Bit	Relative	(Absolute	Offset) Each set	046, 048 and 049 Units	DAP 80 Units
		Offset	Offset) Each	of 8 alarms
			alarm stored as	stored as a
			a separate bit	byte*
						Manual Override:
0	0	0	73	44:00	N/A	check bypass switch
						( DapII ver 5.0 or
						later)
					High Pressure Failure	Water detected
0	1	1	74	44:01		under floor: check
					Compressor No. 1
						probe
0	2	2	75	44:02	High Pressure Failure	No air flow: check
					Compressor No. 2	belt and motor
0	3	3	76	44:03	High Pressure Failure	Dirty filter: check
					Compressor No. 3	filters

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