Lenze EMF2102IB - Manual (Page 53)

Appendix
8-21
L
_^ONMObk
8.3.2 RECEIVE
The command RECEIVE is to request parameter values of the Lenze controllers. The code numbers
of the requested parameter are transmitted via the RECEIVE telegram using the following structure:
EOT AD1 AD2 C1 C2 ENQ
The abbreviations have the following meanings:
EOT (04
hex
) End of the (previous) transmission
AD1, AD2 Logic unit address of the slave to be addressed
C1, C2 Code number (two ASCII characters)
or extended addressing
ENQ (05
hex
) Station request
Structure and meaning of the code numbers (C1, C2) and the controller address (AD1, AD2) are
described in the corresponding paragraphs of the chapter SEND (see page 8-23).
Telegram response
The Lenze controller addressed via a RECEIVE telegram generates one of the following responses:
•
The controller could decode the request and is now sending the requested parameter value
to the host.
STX C1 C2 V1 ... Vn ETX BCC
•
The controller could decode the request, however, a check-sum fault (parity fault) occurred
during transmission.
STX C1 C2 ? ETX BCC
•
The controller could not process the request because the requested code number does not
exist.
STX C1 C2 EOT
The abbreviations have the following meanings:
STX (02
hex
) Start of text
C1, C2 Code number (two ASCII characters)
or extended addressing
V1 to Vn Parameter value (n ASCII characters)
ETX (03
hex
) End of text
BCC Block-check character (00 ¼ FF
hex
)
? (3F
hex
) ASCII character ” ?”
EOT (04
hex
) End of the (previous) transmission
Structure and meaning of the block-check character (BCC) are described in the corresponding
paragraph of the chapter SEND (see page 8-20).
Show/Hide Bookmarks