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4. Access methods/SDO access
4−3
Festo P.BE−SEC−AC−CO−E N en 0802a
4.1
Survey
CANopen offers an easy and standardised way to access all
parameters of the servo controller (e.g. the maximum cur
rent). To achieve a clear arrangement an unique
index and
subindex
is assigned to every parameter (
CAN object
). The
parameters altogether form the so called
object dictionary
.
The object dictionary can be accessed via CAN bus in primar
ily two ways: A confirmed access with so called SDOs and a
unconfirmed access using so called PDOs with no hand−
shake.
1
1
1
2
2
2
4
3
5
6
1
Superimposed control
4
Confirmation
2
Servo controller
5
Data from the servo controller
3
Order
6
Data to the servo controller
Fig.4/1:
Access methods
As a rule the servo controller will be parametrized and con
trolled by SDOs. Additional types of messages (so called
Communication Objects, COB) are defined for special applica
tions. They will be sent either by the superimposed control or
the servo controller:
Содержание SEC-AC-305-CO
Страница 2: ......
Страница 4: ...Contents and general instructions II Festo P BE SEC AC CO EN en 0802a...
Страница 16: ...Contents and general instructions XIV Festo P BE SEC AC CO EN en 0802a...
Страница 17: ...Introduction 1 1 Festo P BE SEC AC CO EN en 0802a Chapter 1...
Страница 20: ...1 Introduction 1 4 Festo P BE SEC AC CO EN en 0802a...
Страница 21: ...Cabling and pin assignment 2 1 Festo P BE SEC AC CO EN en 0802a Chapter 2...
Страница 31: ...Activation of CANopen 3 1 Festo P BE SEC AC CO EN en 0802a Chapter 3...
Страница 38: ...3 Activation of CANopen 3 8 Festo P BE SEC AC CO EN en 0802a...
Страница 39: ...Access methods SDO access 4 1 Festo P BE SEC AC CO EN en 0802a Chapter 4...
Страница 67: ...Adjustment of parameters Load and save set of parameters 5 1 Festo P BE SEC AC CO EN en 0802a Chapter 5...
Страница 154: ...5 Adjustment of parameters Load and save set of parameters 5 88 Festo P BE SEC AC CO E N en 0802a...
Страница 155: ...Device Control State diagram State machine 6 1 Festo P BE SEC AC CO EN en 0802a Chapter 6...
Страница 179: ...Operating modes Adjustment of the Operating Mode 7 1 Festo P BE SEC AC CO EN en 0802a Chapter 7...
Страница 221: ...7 Operating modes Adjustment of the Operating Mode 7 43 Festo P BE SEC AC CO EN en 0802a...
Страница 247: ...Technical appendix A 1 Festo P BE SEC AC CO EN en 0802a Appendix A...
Страница 248: ...A Technical appendix A 2 Festo P BE SEC AC CO EN en 0802a Contents A 1 Recommended components A 3...
Страница 250: ...A Technical appendix A 4 Festo P BE SEC AC CO EN en 0802a...
Страница 251: ...Index B 1 Festo P BE SEC AC CO EN en 0802a Appendix C...
Страница 252: ...B Index B 2 Festo P BE SEC AC CO EN en 0802a C 1 Index B 3...
Страница 272: ...B Index B 22 Festo P BE SEC AC CO EN en 0802a...