Am Instru Q-FP 201, Руководство пользователя

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6. Communication Protocol
§6. 1 General
The Q-FP 201 ultrasonic flow meter integrates a standard RS-232 communication interface and a
complete set of communication protocols that are compatible with that of the Fuji's ultrasonic flow
meter.
§6.2 Interface Pin-out Definition
Pin 1 for battery recharge, positive input
2 RXD
3 TXD
4 not used
5 GND
6 OCT output
7 not used
8 for battery recharge, negative input
9 RING input for connecting a MODEM
§6.3 the Protocol
The protocol is comprised of a set of basic conunands 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—cidd,ddd Q=dd (CR)(LF)
DT(CR) Return date and time yy-mm-dd hhannuss(CR)(LF)
M@(CR)*** Send a key value as if a key is pressed
LCD(CR) Return the current window display
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INSTRU Q-FP 201
Handheld Ultrasonic Flowmeter