Balluff BIS V-6111 series, Техническое описание, Руководство пользователя

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BIS V-6111 CC-Link
Processor unit
26 english
6
Startup
The Message transmission size is always 4 words (8 bytes). To transmit messages to the IO-Link
device, the Message Transfer Area in the cyclical process data buffer is used. The protocol used
makes it possible to transmit messages that are larger than the Message Transfer Area.
At the start of the transmission, the master sets RY(m+n)C, the Message transmission request
flag. BIS V-6111 acknowledges this by setting RX(m+n)C Message Transmission. The master
can now copy the first 8 bytes of the message into the Message Transmission Area and set the
RY(m+n)D Message handshake flag. BIS V-6111 reads out the Message Transmission Area,
writes its response into it and sets the RX(m+n)D Message handshake flag. If another data block
is to be transmitted, the master can now copy it to the Message Transmission Area and invert
the Message handshake flag. BIS V-6111 acknowledges it by inverting its Message handshake
flag. When the message transmission is complete, the master sets RY(m+n)C to 0, which
BIS V-6111 acknowledges by also setting RX(m+n)C to 0.
Read request Write request
Block number L Block number L
Subcommand type H Subcommand type H
Division number L Division number L
Data size H Data size H
Request data Request data
Sum check Sum check
Read response Write response
Block number L Block number L
Subcommand type H Subcommand type H
Return status L Return status L
H H
Division number L Division number L
Data size H Data size H
Response data Response data
Sum check Sum check
6.6 IO-Link MTA
Message
Structure