
MPH-02, MPB-02, MPD-02 Handling, Diagnostic and Service Functions 10-75
DOK-INDRV*-MP*-02VRS**-FK01-EN-P
Interface Mode
The serial interface can optionally be operated in the
• RS232 mode or
• RS485 mode.
Note: Communication via RS485 is only possible in conjunction with
an external RS232/485 converter.
Depending on the mode, it is necessary to use different cables
(see Project Planning Manual).
Transmission Protocols
Two different protocols are supported on the drive side:
• ASCII protocol
• SIS protocol
When switching on the 24 V supply voltage an automatic protocol
detection is activated when receiving signals via the serial interface.
A soon as either
• a valid ASCII start sequence
or
• a valid SIS telegram
was received the drive internally switches to the respective kind of
protocol.
• transmission rates of 9600 and 19200 baud
• 8-bit ASCII protocol
• no parity bit
• one stop bit
Note: There isn’t any telegram frame used but the transmitted ASCII
signs are converted and interpreted. It is only necessary to
comply with a certain order.
• binary protocol
• checksum test (higher Hamming distance D)
• all telegrams are identified by an unequivocal start character ("0x02")
• defined structure of the telegram frame
• it is possible to activate motions (e.g. jogging)
Properties of ASCII Protocol
Properties of SIS Protocol
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