Chapter 9 Appendix-Serial interface network use and communications protocol
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(ENTER) is used to express the end of a command. The characteristic is that the
string of data is flexible. Frequently used commands are as follows:
Command
Description
Data Format
DQD(cr)(lf) 0
Return daily instantaneous
flow
±d.ddddddE±dd(cr) *1
DQH(cr)(lf)
Return hourly
instantaneous flow
±d.ddddddE±dd(cr)
DQM(cr) (lf)
Return instantaneous flow
per minute
±d.ddddddE±dd(cr)
DQS(cr) (lf)
Return instantaneous flow
per second
±d.ddddddE±dd(cr)
DV(cr) (lf)
Return instantaneous
velocity
±d.ddddddE±dd(cr)
DI+(cr) (lf)
Return positive
accumulative flow
±dddddddE±d(cr) *2
DI-(cr) (lf)
Return negative
accumulative flow
±dddddddE±d(cr)
DIN(cr) (lf)
Return net accumulative
flow
±dddddddE±d(cr)
DID(cr) (lf)
Return identification code
of instrument (address
code)
ddddd(cr)5 bits in length
DL(cr) (lf)
Return signal intensity
UP:dd.d,DN:dd.d,Q=dd(cr)
DC(cr) (lf)
Return current error code
*3
DT(cr) (lf)
Current date and time
yy-mm-dd,hh:mm:ss(cr)
LCD(cr) (lf)
Return currently displayed
content on LCD display
ESN(cr) (lf)
Return electronic serial
number
ddddddd(cr)(lf) *4