Yokogawa Removable Chassis DX1000N - Manual (Page 218)

4-34
IM 04L41B01-17E
Measured/Computed Data and FIFO Data
• The FD command is used to output the measured/computed data.
• The FF command is used to output the FIFO data.
• You can use the CB command to specify whether to output the data of measurement
channels set to skip and computation or external input channels set to OFF.
• The ID number of the output format is 1. See “ID” in section 4.1.
2 byte
Number of blocks
Block 1
…
Block n
Number of bytes
2 byte
Binary data
(The binary data section on the
“Conceptual diagram” in
section 4.1.)
Number of Blocks
This is the number of blocks.
Number of Bytes
This is the size of one block in bytes.
Block
Type
…
…
Type
…
…
Type
…
…
Year Month
Channel
…
…
Channel
…
…
Channel
…
…
Day
A2A1
…
…
A2A1
…
…
A2A1
…
…
Hour
A4A3
…
…
A4A3
…
…
A4A3
…
…
Min ms
Summer/
winter
Flag s
Measured data
…
…
External input data
…
…
Computed data
…
…
1 byte 1 byte 1 byte 1 byte 1 byte 1 byte 2 bytes 1 byte 1 byte
4 bits
12 bits
• Flag
The meaning of the each flag is given in the table below. The flags are valid during
FIFO data output. The flags are undefined for other cases.
Bit Flag Meaning of the Flag
0 1
7 No Yes Indicates that the screen snapshot was executed.
6 – –
5 – –
4 – –
3 – –
2 No Yes Indicates that the decimal position or unit information was
changed during measurement.
1 No Yes Indicates that the FIFO acquiring interval was changed with
the FR command during measurement.
0 No Yes Indicates that the internal process took too much time
(computation, for example) and that the measurement could
not keep up at the specified scan interval.
The bits that have “•” for the flag column are not used. The value is undefined.
4.3 Output Format of Binary Data