TF1100-EH transit-time handheld flowmeter manual
28
PART-6 COMMUNICATION PROTOCOL
6. 1 THE PROTOCOL
The protocol is comprised of a set of basic commands that is a string in ASCII format, ending
with a carriage (CR) and line feed (LF). Commonly used commands are listed in the
following table.
Command Function
Data
Format
DQD(CR)
Return flow rate per day
±
d.ddddddE
±
dd(CR)
（
LF
）
*
DQH(CR)
Return flow rate per hour
±
d.ddddddE
±
dd(CR)
（
LF
）
DQM(CR) Return flow rate per
minute
±
d.ddddddE
±
dd(CR)
（
LF
）
DQS(CR) Return flow rate per
second
±
d.ddddddE
±
dd(CR)
（
LF
）
DV(CR)
Return flow velocity
±
d.ddddddE
±
dd(CR)
（
LF
）
DI+(CR)
Return POS totalizer
±
dddddddE
±
d(CR)
（
LF
）
**
DI-(CR)
Return NEG totalizer
±
dddddddE
±
d(CR)
（
LF
）
DIN(CR)
Return NET totalizer
±
dddddddE
±
d(CR)
（
LF
）
DID(CR) Return Identification
Number
ddddd(CR)
（
LF
）
DL(CR)
Return signal strength and
quality
S=ddd,ddd Q=dd (CR)(LF)
DT(CR)
Return date and time
yy-mm-dd hh:mm:ss(CR)(LF)
M@(CR)*** Send a key value as if a
key is pressed
LCD(CR)
Return the current window
display
FOdddd(CR) Force the FO output with a
frequency in dddd Hz
ESN(CR)
Return the ESN for the
instrument
Dddddddd(CR)(LF)
RING(CR)
Handshaking Request by a
MODEM
OK(CR)
Response from a MODEM
No action
GA
Command for GSM
messaging
Please contact factory for detail
GB
Command for GSM
messaging
GC
Command for GSM
messaging
DUMP(CR)
Return the buffer content
In ASCII string format
DUMP0(CR) Clear the whole buffer
In ASCII string format
DUMP1(CR) Return the whole buffer
content
In ASCII string Format, 24KB in length
Ｗ
Prefix
before
an
Identification Number in a
network environment. The
