Campbell CR800 Especificaciones descargar pdf (Pagina 272)

Section 12. Serial Input and Output Functions

12-2

Remarks

The DialSequence instruction indicates the beginning of the code; the

EndDialSequence indicates the ending. The code is entered in the declarations

section of the program, prior to the main program (defined by the

BeginProg/EndProg instructions).

Any time an instruction in the main program requires that communication be

made with the remote datalogger identified by the PakBusAddr parameter, the

DialSequence code for that datalogger will be executed. The code will also be

executed if the datalogger receives a message from another PakBus device that

needs to be routed to the remote datalogger.

Each instruction has one parameter:

PakBusAddr The PakBusAddr parameter identifies the PakBus address of

the remote datalogger with which the host datalogger is trying to communicate.

Valid entries are 0 through 4094. Each PakBus device in the network must

have a unique address.

DialSuccess The DialSuccess parameter is a variable that will be

monitored for the success/failure of the communication attempt. If the

communication attempt fails, the communication link will be closed. A

variable holding the result of DialModem can be used for this parameter.

This instruction runs sequentially from the processing task sequencer,

regardless of whether the datalogger is in pipeline or sequential mode.

DialVoice (DialString)

The DialVoice instruction is used to define the dialing string for a COM310

voice modem.

Syntax

DialVoice (DialString)

Remarks

If the DialVoice instruction is set equal to a variable, a -1 (True) will be

returned if the communication attempt was successful or a 0 (False) will be

returned if it failed. VoiceHangup is used after the communication attempt to

hang up the voice modem.

DialString The DialString is the telephone number and any other codes

used to dial the modem. A comma in the DialString inserts a 2 second pause.

When creating code for voice modems, the VoiceKey instruction should be

used to add a delay before the EndVoice instruction is executed. Otherwise,

the datalogger will end the VoiceSpeak command before the spoken message is

completed.

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Campbell CR800 Especificaciones Pagina 272