Protocol Specific Configuration
DSIG - Go down on loss of signal
If set to one (1), this bit will cause the HDLC.FRAME terminal’s status to be changed to DOWN when the CTS or DCD signal is lost. At the same time, an unsolicited status message is delivered to the receiving application. The RSIG option has no effect in this case.
If this bit is set to zero (0), then the HDLC.FRAME terminal continues to operate whatever the state of the CTS and DCD signals.
RTS - Control the RTS signal on transmitted frames
If set to one (1), this bit will cause the RTS signal to be raised when the HDLC.FRAME terminal has a frame to transmit. When CTS is raised by the remote device, the frame is transmitted after frame transmission RTS is dropped, unless there is another frame to transmit.
If this bit is set to zero (0), then RTS is kept raised as long as the
HDLC.FRAME terminal is enabled.
Select Word
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
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Reserved (0) |
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| BADFR | Reserved (0) |
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All reserved bit positions must be filled with zeros (0).
BADFR - Bad frame completion
If set to one (1), this bit causes received frames with bad CRC or received aborted frames to be passed up to the receiving application with a status code indicating the error condition.
If this bit is set to zero (0), then all received frames with bad CRC or received aborted frames are discarded.
Protocol Option Word
The option word is not used with the HDLC.FRAME protocol.
Chapter 4 | 39 |