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Parker Hannifin S.p.A. Divisione.S.B.C. manuale d’uso SPD
93
14.3
Description campi Extended message set #2
The set 2 extended message allows the exchange of memory areas between the master and
the SPD both in communication and in real time mode. Data exchange is synchronous and the
master transmits data to all SPD, which store them to a temporary buffer; then, the master
transmits the synchronism message. When the drives receive this message, they copy the data
blocks received from the temporary buffer to the parameter area and reply by sending their
sets of parameters to the master.
Data transmission message from Master to SPD
The master sends data to the SPD using the following message:
Block send
Data length
8 bytes
Field Name
Data
Contents
64 bit of data
Identifier
ID2
ID1
ID0
- - - - -
ID10 ID9 ID8 ID7 ID6 ID5 ID4 ID3
A2 A1 A0 X X X X X 1 0 0 0 0 0 1 A3
A0:A3
Address of the drive, valid values 1..15.
Data synchronism message
Received data are stored from Pr80 to Pr83 and the parameters are transmitted from Pr84 to
Pr87 using the following message:
Block sync
Data length
0 bytes
Field Name
Contents
No data
Identifier
ID2
ID1
ID0
- - - - -
ID10 ID9 ID8 ID7 ID6 ID5 ID4 ID3
0 0 0 X X X X X 1 0 0 0 0 0 0 0