Sensoray 2600 - Manual (Page 29)

2600 Family Instruction Manual 24 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.