Yokogawa DR240 - Manual (Page 39)

4-10 IM DR231-11E
4.7 Transferring the Instantaneous V alues
The instantaneous values of the data measured on the DR (current measured data) are transmitted to
the PC that is connected through port No. 34151.
Note
• Up to four PCs can connect to port No. 34151 of one DR.
• The commands described here do not affect the status byte.
• EF, EL, and EB command do not support sub-delimiters.
The measured data are transmitted using the following command.
EF Outputs the measured/computed data in binary format.
Mode Operation mode
Syntax EFp1, p2, p3
p1 Data to be output
0 Output only the measured/computed data.
1 Output the measured/computed data and alarm data
p2 First channel to output (001 to 560, or A01 to A60)
p3 Last channel to output (001 to 560, or A01 to A60)
Description • A01 to A60 in p2 and p3 correspond to computation channels (A01 to A30 for the
stand-alone type).
• The data of expansion type channels that are not connected are not output.
• The data are output in the byte order specified by the EB command.
• Measured data and computed data are output simultaneously.
• If a parameter is omitted, the parameter specified previously is used.
• If a specified channel cannot output data, 2-byte data with a data length of zero
are output.
• The output format is as follows.
Year Month Day Hour Min Sec MS DM
Data length
A1 B1 C1 D1 Measured data
Computed data E1 F1 G1 H1
Am Bm Cm Dm Measured data
Computed data En Fn Gn Hn
Data length: When p1=0: 8 + measurement ch
×
4 + computation ch
×
6
When p1=1: 8 + measurement ch
×
6 + computation ch
×
8
MS: Value in units of 0.1 s. 0 or 5.
DM: Dummy (undefined).
A1 to An: Unit number. Computation channel is fixed to 0
×
80.
B1 to Bn: Measurement channel number
C1 to Cn, G1 to Gn: Alarm status (level 1, 2)
(No output when p1 is 0)
0: No warning
1: Upper limit alarm
2: Lower limit alarm
3: Upper difference limit alarm
4: Lower difference limit alarm
5: Rate-of-change upper-limit alarm
6: Rate-of-change lower limit alarm