Description of HART DDT Objects

HART DDT Input Objects

The following table describes the HART DDT input objects supported by the BME AHI 0812 analog input module and the BME AHO 0412 analog output module.

Symbol	Size	Type	Access	Description
G_ModuleStatus	32 bits	DWORD	Read	Module status
G_ChannelStatus	8 bytes	DWORD	Read	Channel status¹
G_ChannelStatus2	8 bytes	DWORD	Read	Channel status²
P_ChannelN_InstrumentStatus³	32 bits	DWORD	Read/Write	Channel N instrument status
P_ChannelN_PV³	32 bits	Float	Read	Channel N primary variable
P_ChannelN_SV³	32 bits	Float	Read/Write	Channel N secondary variable
P_ChannelN_TV³	32 bits	Float	Read/Write	Channel N tertiary variable
P_ChannelN_QV³	32 bits	Float	Read/Write	Channel N quarternary variable
P_ChannelN_CurrentValue³	32 bits	Float	Read/Write	Channel N current value
P_ChannelN_PercentValue³	32 bits	Float	Read/Write	Channel N percent value
P_ChannelN_UpdateCounter³	32 bits	DWORD	Read/Write	Channel N update counter
1. G_ChannelStatus contains cumulative channel status data for channels 0...3 for the: BME AHI 0812 analog input module BME AHO 0412 analog output module 2. G_ChannelStatus2 contains cumulative channel status data for channels 4...7 on the BME AHI 0812 analog input module. 3. N represents the channel number, as follows: from 0...7 for the BME AHI 0812 analog input module from 0...3 for the BME AHO 0412 analog output module

HART DDT Output Objects

The following table describes the HART DDT output objects supported by the BME AHI 0812 analog input module and the BME AHO 0412 analog output module.

Symbol	Size	Type	Access	Description
G_ResetChanged_ID	8 bits	Byte	Read	Reset changed
G_Enable_ID	8 bits	Byte	Read/Write	Channel enable