Euromag EUROSONIC 2000 HH, Руководство пользователя

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COMMUNICATION PROTOCOL
6. COMMUNICATION PROTOCOL
The ultrasonic flow meter integrates a standard RS-232C communication interface and a complete set of
communication protocol.
6.1 RS232 CONNECTOR PIN-OUT
RS232 WIRING DIAGRAM
6.2 COMMUNICATION PROTOCOL
The protocol is comprised of a set of basic commands that are strings in ASCII format, ending with a
carriage (CR) and line feed (LF). Commonly used commands are listed in the following table.
6.2.1 BASIC COMMANDS
1
2
3
4
5
6
7
8
9 1
2
3
4
5
6
7
8
9
REFERENCES
Pin Definition
1 Not Used
2 RXD
3 TXD
4 DTS
5 GND
6 DSR
7 +5V
8 Not Used
9 Ring input for connecting a modem
f. 10
Command
DQD(CR) 1
DQH(CR)
DQM(CR)
DQS(CR)
DV(CR)
DI+(CR)
DI-(CR)
Function
Return flow rate per day
Return flow rate per hour
Return flow rate per minute
Return flow rate per second
Return instantaneous flow velocity
Return POS totalizer
Return NEG totalizer
Data Format
±d.ddddddE±dd(CR) (LF) 2
±d.ddddddE±dd(CR) (LF)
±d.ddddddE±dd(CR) (LF)
±d.ddddddE±dd(CR) (LF)
±d.ddddddE±dd(CR) (LF)
±dddddddE±d(CR) (LF)
3
±dddddddE±d(CR) (LF)
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