Siemens 7ML19985AB01 Manuel D’Utilisation
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.
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.
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.
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.
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