Baumer BA_DSRT_22DJ - Handbuch (Seite 35)

Manual_CANopen_StrainLink_EN_V3_05.doc 35/65 Baumer
22.07.11/dam Frauenfeld, Switzerland
6.3.3 Autozero
To autozero or tare the sensor (set process value to zero), the command with the ASCII code „zero“ must be
sent to index 6125h and sub-index 1. Only the 1
st
process value (strain) can be tarred.
Send an autozero command (object 6125h) to the sensor:
ID DLC Byte1 Byte2 Byte3 Byte4 Byte5 Byte6 Byte7 Byte8
600h + ID 8 22h 25h 61h 01h 7Ah 65h 72h 6Fh
Response from CANopen strain link after autozero:
ID DLC Byte1 Byte2 Byte3 Byte4 Byte5 Byte6 Byte7 Byte8
580h + ID 8 60h 25h 61h 01h 0 0 0 0
If the internal signal is out of tare range, the sensor responds with a “time out” to a tare request.
The zero value after autozero can be saved to EEPROM with the save command (object 1010h). If the object
2001h (store autozero automatically)is enabled, the zero value will be saved automatically after every tare
procedure. For frequently tare procedure this function (store autozero automatically) should be disabled.
Autozero can be run with the object 6125h, 2003h and with the Receive PDO1.
6.3.4 Physical unit PV
Read physical unit from process value (object 6131h):
ID DLC Byte1 Byte2 Byte3 Byte4 Byte5 Byte6 Byte7 Byte8
600h + ID 8 40h 31h 61h 01h 0 0 0 0
Response from CANopen strain link:
ID DLC Byte1 Byte2 Byte3 Byte4 Byte5 Byte6 Byte7 Byte8
580h + ID 8 43h 31h 61h 01h 00h 01h 01h FAh
Byte 5 – 8: 00’01’01’FAh FA’01’01’00 (LSB first) unit “µ
ε
” or „µm/m“
The object 6131h is read only.
6.3.5 Decimal digits PV
Read decimal digits from the process value (object 6132h):
ID DLC Byte1 Byte2 Byte3 Byte4 Byte5 Byte6 Byte7 Byte8
600h + ID 8 40h 32h 61h 01h 0 0 0 0
Response from CANopen strain link:
ID DLC Byte1 Byte2 Byte3 Byte4 Byte5 Byte6 Byte7 Byte8
580h + ID 8 4Fh 32h 61h 01h 02h 0 0 0
Byte 5:
02h 2 decimal digits
The decimal digits will be influenced by changing the transmit data type (16/24bit with object 2112h).
The object 6132h is read only.