App index – Yokogawa Button Operated MV2000 User Manual
Page 121
5-3
M-4662
Responses
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App
Index
Data Sum
The sum value of the binary data.
Note
The MV transmits the data length in the binary header section according to the byte order that
is specified with the BO command.
Flag
Bit
Name (Abbreviation)
Flag
Meaning of the Flag
0
1
7
BO
MSB
LSB
Output byte order
6
CS
No
Yes
Checksum availability
5
–
–
–
4
–
–
–
3
–
–
–
2
–
–
–
1
–
–
–
0
END
Middle
End
In the middle of or at the end of
continuous data
• When the BO flag is 0, the MV transmits the high byte first. When the BO flag is 1, the MV
transmits the low byte first.
• If checksum is enabled (parameter = 1) using the CS command parameter, a sum value is
inserted in the header sum and data sum sections. If checksum is disabled (parameter =
0), a zero is inserted in the header sum and data sum sections. For a sample function that
calculates the sum value, see “Calculating the Sum Value” on the next page.
• If the amount of data to be transmitted in response to an ME command is large, the MV may
not be able to transmit all the data in one output request (parameter GET). If this happens,
the END flag is set to 0.You must request for subsequent data (parameter NEXT) until the
END flag becomes 1.
• The bits whose name and flag are indicated as “–” are not used. Their values are undefined
ID
An ID number indicating the binary data type. The table below indicates the data types
and the corresponding output commands. Binary data files that are not indicated in the
table below are considered undefined files.
ID
Binary Data Type
Type
Format
Output
Number
Command
0
Undefined file
File (*.*)
–
ME
1
Instantaneous data
Data
Yes
FD
1
FIFO data
Data
Yes
FF
13
Screen data file
File (*.PNG)
→
ME,FC
15
Display data file (binary)
File (*.DAD)
No
ME
16
Event data file (binary)
File (*.DAE)
No
ME
17
Manually sampled file
File (*.DAM)
Yes
ME,MO
18
Report file
File (*.DAR)
Yes
ME,MO
19
Setup data file
File (*.PDL)
No
ME,FE4
25
Configured channel information output Data
Yes
FE5
26
Configured alarm information output
Data
Yes
FE6
29
Display data file (text)
File (*.TDD)
Yes
ME
30
Event data file (text)
File (*.TDE)
Yes
ME
Yes: Disclosed. No: Undisclosed. –: Common format.
• The table above shows the different types of binary data.
• There are two binary data types: data and file.
• Data
• You can transmit measured/computed data by using the FD command.
• You can transmit FIFO data by using the FF command.
• The data format is disclosed. See section 5.3 for details.
5.1 Response Syntax