Dascom 7106 User Guide Manual de usuario descargar pdf (Pagina 51)

Appendixes

XON/XOFF Protocol

Requirements to output X-ON code

• Communication is possible when the power is on.

• When the receive buffer has less than 128 byte available, XOFF code is

output, then the receive buffer has at least 1024 bytes available.

Requirements to output the X-OFF code

• When the receive buffer has less than 128 bytes available

XON

XOFF

Receive buffer 16kB

1024 byte

128byte

DTR Protocol

Conditions when the DTR signal is “Ready (High)”

All the following conditions are satisfied.

• The receive buffer is 128 byte or more available capacity.

* When the receive buffer has less than 128 byte available and the DTR signal

has changed to BUSY (Low) status, BUSY status is maintained until the capacity

of the receive buffer has reached 1024 bytes or more.

Conditions when DTR signal is “Busy (Low)”

• When the receive buffer has fallen to less than 128 byte available.

Interfaces

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Dascom 7106 User Guide Manual de usuario Pagina 51