Yokogawa Data Acquisition with PID Control CX2000 - Manual (Page 185)

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IM 04L31A01-17E
FD Outputs the newest measured/
computed/control data
Syntax FD p1,p2,p3
p1: Output data type
0 Output the newest measured/computed/
control data in ASCII format
1 Output the newest measured/computed/
control data in BINARY format
4 Output the newest TLOG data in ASCII
format
5 Output the newest TLOG data in BINARY
format
p2: First channel number (01 to 20, 31 to 60,
101 to 118, 201 to 248) (01 to 06, 31 to 42,
101 to 106, 201 to 212 on the CX1000)
p3: Last channel number (01 to 20, 31 to 60,
101 to 118, 201 to 248) (01 to 06, 31 to 42,
101 to 106, 201 to 212 on the CX1000)
Example Output the newest measured/computed/control
data of channels 1 to 5 from the CX in ASCII
format.
FD0,01,05
Description • The newest measured/computed/control data
means the newest measured/computed/
control data in the internal memory when the
CX receives the FD command.
• Set the first channel number and last channel
number parameters so that the last channel
number is greater than or equal to the first
channel number.
FF Outputs FIFO data
Syntax FF p1,p2,p3,p4
p1: Operation type
GET Output from the next block
after the previous output
RESEND Retransmit the previous
output
RESET Set the newest data position
(block) to the read position of
the FIFO buffer (block)
GETNEW Output the newest data
p2: First channel number (01 to 20, 31 to 60,
101 to 118, 201 to 248) (01 to 06, 31 to 42,
101 to 106, 201 to 212 on the CX1000)
p3: Last channel number (01 to 20, 31 to 60,
101 to 118, 201 to 248) (01 to 06, 31 to 42,
101 to 106, 201 to 212 on the CX1000)
p4: Upper limit of the number of blocks to be
read
1 to 60
If the measured/computed/control data is
less than the specified number of blocks,
the available amount of data is transmitted.
Example Output 2 blocks of FIFO data of channels 1 to
10.
FFGET ,01,10,2
Description • The FIFO buffer is a cyclic buffer in which the
oldest data is overwritten. Use the FR
command to set the acquisition period.
• The following formats for outputting FIFO data
are available.
Logging output (GET)
Outputs the specified number of blocks (p4) of
data from the next block after the block that was
read previously.
Read the data within the following buffer period
to prevent dropouts from occurring.
FIFO buffer length: 60 intervals (scan interval)
Maximum buffer period: 60 × (acquisition period)
Newest value output (GETNEW)
Outputs the data from the newest data block
back to the specified number of blocks (p4).
• Parameters p2 to p4 are valid when p1 is set
to GET or GETNEW.
• If you omit p4, all blocks are specified.
• Set the first channel number and last channel
number parameters so that the last channel
number is greater than or equal to the first
channel number.
• For details on the output flow of the FIFO
data, see appendix 4.
FL Outputs log, alarm summary,
and message summary
Syntax FL p1,p2
p1: Log type
COM Communications
FTPC FTP client
ERR Operation error
KEY Key login
WEB Web operation
EMAIL E-mail
ALARM Alarm summary
MSG Message summary
p2: Maximum read length of the log
When p1 is COM 1 to 200
When p1 is ALARM 1 to 120
When p1 is MSG 1 to 100
When p1 is some type other than the above
1 to 50
Example Output the ten newest operation error logs.
FLERR,10
Description • Outputs the log that is saved in the CX.
• If p2 is omitted, all written logs are output.
6.11 Output Commands (Setup, Measurement, and Computation Data Output)