Rockwell-automation 1797-OE8H FLEX Ex HART Analog Modules User Manual Uživatelský manuál Strana 134

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Publication 1797-6.5.3 - March 2006
B-10 FLEX Ex HART Module Commands
Command 135
For the given long frame addresses, the Read Dynamic Data of the
Transmitters command returns the following transmitter data:
Selected SCAN command
Long frame address
HART data
No more than seven instruments may be requested.
Table B.10 Command 135 Request and Response Data Bytes
Byte Description Value
Request Data Bytes
0…4 EXT_ADDR_0 Extended address of instrument 0
5 COUNT_0 Bytes before next item
EXT_ADDR_I Extended address of instrument I
COUNT_I Bytes before next item
……
Response Data Bytes
0 SCAN_CMD Scan command used 1 = Command 1
2 = Command 2
3 = Command 3
1…5 EXT_ADDR_0 Extended address of instrument 0
6 COUNT_0 Bytes before next item
7 ERROR_0 Error 0 0 = No error.
64 = The
requested
instrument is not
on the scan list.
No data is
included for that
instrument.
8 DATA_0 Reply from the instrument 0 (status bytes +
data bytes)
EXT_ADDR_I Extended address of instrument I
COUNT_I Bytes before next item
ERROR_i Error i
DATA_i Reply from the I-th instrument (status
bytes + data bytes)
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