Parker LVD1 - Description of Fields in Real Time Mode

Parker Hannifin S.p.A. - Divisione S.B.C. LVD User’s Manual
83
6.1 Description of fields in real time mode
Cyclic message from Master to LVD
Cyclic data
Data length
8 bytes
Field Name
Data
Contents
position ref. 32 bits speed ref. 16 bits Pr52
Identifier
ID2 ID1 ID0 - - - - - ID10
ID9 ID8 ID7 ID6 ID5 ID4 ID3
A2 A1 A0 X X X X X 0 0 0 0 0 1 1 A3
A0:A4 Slave LVD address (Pr27+1), valid values 1..15.
Pr52 is used as a command and it must be controlled by the pico-PLC.
Synchronism message from Master to LVD
Synchronism message
Data length
3 bytes
Field Name
Sync no meaning
Contents
Sync type 8 bits no meaning 16 bits
Identifier
ID2 ID1 ID0 - - - - - ID10
ID9 ID8 ID7 ID6 ID5 ID4 ID3
0 0 0 X X X X X 0 0 0 0 0 0 0 0
Synchronism message type 0 (Sync = 0): each LVD activates the speed and position
references and store the current motor position.
Synchronism message type 1 (Sync = 1): each LVD store the current motor position.
Cyclic message from LVD to Master
Cyclic reply
Data length
6 bytes
Field Name
Addr Data Status
Data
Pr27+1 motor position 32 bits Pr53
Identifier
ID2 ID1 ID0 - - - - - ID10
ID9 ID8 ID7 ID6 ID5 ID4 ID3
A2 A1 A0 X X X X X 0 0 0 1 0 1 0 A3
A0:A4 Slave LVD address (Pr27+1), valid values 1..15.
Parameter Pr53 is utilised to define the drive status.