Wika D-21-9 Manuel d'utilisateur télécharger pdf (Page 7)

D-20-9 / D-21-9 GB

WIKA Additional Instructions Pressure Transmitter with CANopen Interface D-20-9 / D-21-9 7

2. Service Data Object (SDO)

With Service Data Objects the access to entries of a device’s object dictionary is provided.

Read Object

Master sends

ID DLC Byte0 Byte1 Byte2 Byte3 Byte4 Byte5 Byte6 Byte7

LSB MSB

600h

Node-ID

CS =

40h

Index

Sub-

Index

00h 00h 00h 00h

Transmitter answers

ID DLC Byte0 Byte1 Byte2 Byte3 Byte4 Byte5 Byte6 Byte7

LSB MSB LSB MSB

580h

Node-ID

CS =

42h

Index

Sub-

Index

Data

Write Object

Master sends

ID DLC Byte0 Byte1 Byte2 Byte3 Byte4 Byte5 Byte6 Byte7

LSB MSB LSB MSB

600h

Node-ID

CS =

22h

Index

Sub-

Index

Data

Transmitter answers

ID DLC Byte0 Byte1 Byte2 Byte3 Byte4 Byte5 Byte6 Byte7

LSB MSB

580h

Node-ID

CS =

60h

Index

Sub-

Index

00h 00h 00h 00h

Abort SDO Transfer

If an error occurred while reading or writing an object, the transmitter answers:

ID DLC Byte0 Byte1 Byte2 Byte3 Byte4 Byte5 Byte6 Byte7

LSB MSB LSB MSB

600h

Node-ID

CS =

80h

Index

Sub-

Index

Abort Code

Abort Codes

0504 0001h Client/server command specifier not valid or unknown

0601 0001h Attempt to read a write only object

0601 0002h Attempt to write a read only object

0602 0000h Object does not exist in the object dictionary

0606 0000h Access failed due to an hardware error

0609 0011h Sub-index does not exist

0609 0030h Value range of parameter exceeded

0800 0020h Data cannot be transferred or stored to the application

1 2 3 4 5 6 7 8 9 10 11 12 ... 50 51

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Wika D-21-9 Manuel d'utilisateur Page 7

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