Sensoray 2600 Manual do Utilizador descarregar pdf (Página 29)

2600 Family Instruction Manual

Chapter 4 : Serial Communication Server

4.4.6 Close

Function Disables the serial transmitter and receiver.

Opcode 0x05

Command none

Response (Status)

Notes All of the status flags are reset to zero.

Close flushes any buffered characters in the

transmit and receive queues, effectively

emptying these buffers.

Any character transmission that is in progress

will be completed before the transmit buffer is

flushed.

All com ports are initialized to the closed state

upon module reset. In the closed state, both the

transmit and receive buffers are initialized to the

empty state, and all com port serial transmitters

and receivers are disabled.

4.4.7 Flush

Function Dumps the receive character buffer and resets all

error flags.

Opcode 0x06

Command none

Response (Status)

Notes This command discards all characters in the

receive character buffer and resets to zero all of

the receiver’s error status flags.

4.4.8 GetRxCount

Function Returns the receive buffer character count.

Opcode 0x07

Command none

Response (Status),(Count[0]),(Count[1])

Notes GetRxCount returns the total number of

characters pending in the receive buffer.

4.4.9 GetTxCount

Function Returns the transmit buffer character count.

Opcode 0x08

Command none

Response (Status),(Count[0]),(Count[1])

Notes GetTxCount returns the total number of

characters pending in the transmit buffer. This

command can be used to determine whether the

transmit buffer has sufficient free space for a new

character string before executing a Send

command.

4.4.10 StartBreak

Function Causes the transmitter to send a continuous

break.

Opcode 0x09

Command none

Response (Status)

4.4.11 EndBreak

Function Terminates break transmission.

Opcode 0x0A

Command none

Parameter Function

Status Com port status. The REJ flag will be

set if the port is already closed.

Parameter Function

Status Com port status.

Parameter Function

Status Com port status. The REJ flag will be

set if the port is closed.

Count Number of bytes pending in the

receive buffer.

Parameter Function

Status Com port status. The REJ flag will be

set if the port is closed.

Count Number of bytes pending in the

transmit buffer.

Parameter Function

Status Com port status. The REJ flag will be

set if the port is closed.

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