H-2 specification of hart device tag, Device tag extension mode, Number of characters in extended device tag – Yokogawa FieldMate User Manual
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H-2
IM 01R01A01-01E
9th Edition : May 31, 2013-00
H-2 Specification of HART Device Tag
The device tag is based on device parameter information of an actual device and is
decided as follows. These device tags are used in FieldMate for accessing actual devices
and managing the device database.
Device Tag Extension Mode
In this mode, the extended device tag is used for managing the devices through FieldMate.
• Tag (New Physical Device Tag)
• Tag (New Physical Device Tag) + Descriptor (New HART Descriptor)
• Descriptor (New HART Descriptor)
• Message (New HART Message)
• Long Tag (New HART Long Tag) : HART 6 or 7 only
Number of characters in Extended Device Tag
Tag
8 characters of Tag
Tag + Descriptor mode
8 characters of Tag + 16 characters of Descriptor
Descriptor mode
16 characters of Descriptor
Message mode
32 characters of Message
Long Tag (HART 6 or 7 only)
32 characters of Tag
*
:
Delimiters such as tabs, commas, and spaces cannot be inserted between Tag and Descriptor.