Parker SPD 2 - Page 95

Parker Hannifin S.p.A. Divisione.S.B.C. manuale d’uso SPD
94
Response message from SPD to Master
Block reply
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 1 0 A3
A0:A3 Unit address of the drive, valid values 1..15.
Note 1: as for the “real time mode”, bit 41.9 is set to 1 every synchronism message receiving
via SBCCAN.
Therefore, it is possible to check the communication status between Master and Slave via
CanBus through a simple pico-PLC program.
The pico-PLC code on the drive be as follows:
…
Ld 41.9
Out 41.5
Rst 41.9
…
If the check of the communication status between Master and Slave via CanBus is
implemented into the drive pico-PLC, the test is executed every 6.144 [ms] (i.e. minimum
execution time of pico-PLC program) or multiples.