Chapter 6 Drive Communication Network｜VP3000
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The AV objects are divided into ‘Commandable’ and ‘Read-only” cases.
⚫ Commandable case: You can use Write_Serivce to access the Present_Value property of
commandable AV objects. Therefore, the commandable AV objects are linking to the
Control_Word and Pr_Word in VP3000.
⚫ Read-only case: You can only use Read_Service to access the Present_Value property of
read-only AV objects. Therefore, the read-only AV objects are linking to the Status_Word in
VP3000.
The BV objects are divided into ‘Commandable’ and ‘Read-only” cases.
⚫ Commandable case: You can use Write_Serivce to access the Present_Value property of
commandable BV objects. Therefore, the commandable BV objects are linking to the
Control_Bit in VP3000.
⚫ Read-only case: You can only use Read_Service to access the Present_Value property of
read-only BV objects. Therefore, the read-only BV objects are linking to the Status_Bit in
VP3000.
6-2-4-1 AnalogValue (AV) Object
⚫ Commandable AnalogValue (AV) Object
In VP3000, AV_000–AV_005 support the commandable Present_Value property. Meanwhile,
these objects also support Priority_Arryay and Relinquish_Default properties. Therefore, we
can use (multiple) Read_Serivce to access the data.
⚫ Read-only AnalogValue (AV) Object
In VP3000, AV_050–AV_073 support the read-only Present_Value property. Meanwhile, these
objects do not support Priority_Array and Relinquish_Default properties.
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