Milltronics provides a standard Utilities software package, for convenient
communication between an IBM PC compatible computer and the OCM-3. In addition,
the user may opt to develop his own custom software program to perform tasks suited
to his specific needs.
Protocol
The protocol for the OCM-3 is as follows:
baud rate: set via P37
parity: none
stop bits: 1
word length: 8
The OCM-3 uses a three wire XON/XOFF serial communication link. When the
OCM-3’s receive buffer is near full, the OCM-3 sends an XOFF signal to tell the
sender of the near full condition.
If the sender is also using XON/XOFF, it will respond to the XOFF signal by
suspending its transmission.
Similarly, when the OCM-3 receive buffer is near empty, the OCM-3 sends an XON
signal to tell the sender that it is safe to resume sending.
The communication baud rate of the OCM-3 and its correspondent must be the same.
7ML19985AB01 OCM III 102
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