3. Functionality 647C
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3.8.1.3 Handshake Protocol
The handshake protocol synchronizes different processing speeds of 647C and host computer. If
the receiving device is busy with calculating and therefore not ready to accept more date it stops
the transfer through a handshake protocol. The 647C can accept 30 commands at maximum
speed until it stops the transfer.
There are three kinds of handshake modes for the communication with the host computer:
- no handshake
- software handshake (XON, XOFF)
- hardware handshake (RTS, CTS)
The usage of one of the above modes depens on the connection to the computer. If the
communication is run without handshake and the calculating speed do not match, loss of data may
appear.
3.8.1.4 Interface Connections
When the 647C software is booting (e.g. at power on or hardware reset) it detects the handshake
mode through the cable type on the RS232 line. This mode is displayed in the menu.
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