Parker Compax3 Series User Manual

Parker EME
Communication
192-120114 N5 C3I22T11 June 2008 303
Compax3>
 Bits 0 and 1 are used to identify the response
 Bit 3 is always 0
The maximum number of data bytes in the request telegram is 256, in the response
telegram 253.
The block securing (CRC16) is made via the CCITT table algorithm for all charac-
ters.
After receiving the start code, the timeout monitoring is activated in order to avoid
that Compax3 waits in vain for further codes (e.g. connection interrupted) The ti-
meout period between 2 codes received is fixed to 5ms (5 times the code time at
9600Baud)
Write object – WrObj telegram
SZ Adr L D0 D1 D2 D3 ... Dn Crc(Hi) Crc(Lo)
0xCX n Index(Hi) Index(Lo) Subindex Value 0x.. 0x..
Describing an object by a value.
Positive acknowledgement – Ack-telegram
SZ L D0 D1 Crc(Hi) Crc(Lo)
0x06 1 0 0 0x.. 0x..
Answer from Compax3 if a writing process was successful, i.e. the function could
be executed and is completed in itself.
Negative acknowledgement – Nak - telegram
SZ L D0 D1 Crc(Hi) Crc(Lo)
0x07 1 F-No.(Hi) F-No.(Lo) 0x.. 0x..
Answer from Compax3 if access to the object was denied (e.g. function cannot be
executed at that point in time or object has no reading access). The error no. is
coded according to the DriveCom profile resp. the CiA Device Profile DSP 402.
Read object – RdObj - telegram
SZ Adr L D0 D1 D2 D3 D4 D5 ... Dn Crc(Hi) Crc(Lo)
0xAX n Index1(Hi) Index1(Lo) Subindex1 Index2(Hi) In-
dex2(Lo)
Subindex2 ... ... 0x.. 0x..
Reading one or several objects
Answer – Rsp - telegram
SZ L D0 ... Dx-1 Dx ... Dy-1 Dy-D.. D ... D.. D ... Dn Crc(Hi) Crc(Lo)
0x05 n Value1 Value 2 Value 3 Value .. Value n 0x.. 0x..
Answer from Compax3 if the object can be read.
If the object has no reading access, Compax3 answers with the Nak – telegram.
Reading object "StatusPositionActual" (o680.5):
Request: A5 03 02 02 A8 05 E1 46
Response: 05 05 FF FF FF FF FE 2D 07 B4
Writing into an Array (o1901.1 = 2350)
Request: C5 02 08 07 6D 01 00 09 2E 00 00 00 95 D5
Response: 06 01 00 00 BA 87
Response telegram
Example:

Parker Compax3 Series Specifications

General

Brand	Parker
Model	Compax3 Series
Category	DC Drives
Language	English