Bedrock Secure OSA Remote, Руководство пользователя

Страница: 99 / 110

Appendix D
10/11/18 Bedrock Secure OSA Remote User Manual - BRDOC020_001 D-1
HART Variables
The Bedrock Secure OSA Remote uses the HART variables listed in this
appendix. HART runtime data is listed in Table D-1. HART configuration data
is listed in Table D-2. The HART variable names in the two tables correspond to
the description fields displayed on the HART Device Data I/O Mapping tab in
the Bedrock IDE.
The bit definitions for the Communication Status field in Table D-1 are listed in
Table D-3. The bit definitions for the Device Status field in Table D-1 are listed
in Table D-4.
In addition to the HART runtime and configuration data, the Bedrock IDE
displays the HART device state for each channel. See Table D-5 for the HART
device states.
The HART Device Data Parameters tab in the Bedrock IDE provides
a HART Device Address parameter for each channel. Entering a value of 0-15
specifies an address of a HART device. A value of 16 is used for auto-scan.
Setting a channel for auto-scan will cause the OSA Remote to scan from address
0-15. The first HART device found will be used for that channel.
Table D-1 HART Runtime Data
HART Variable Name Size Type/Range
Loop Current 4 bytes Float
Primary Value Unit Code 2 bytes 1-255
Primary Value 4 bytes Float
Secondary Value Unit Code 2 bytes 1-255
Secondary Value 4 bytes Float
Tertiary Value Unit Code 2 bytes 1-255
Tertiary Value 4 bytes Float
Quaternary Value Unit Code 2 bytes 1-255
Quaternary Value 4 bytes Float
Communication Status 1 byte 8 bit field
Device Status 1 byte 8 bit field