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JVL Industri Elektronik A/S - User Manual - Integrated Stepper Motors MIS23x, 34x, 43x
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More details of CANopen Theory
Reset Node:
This is an instruction for transition from the Operational, Pre-Operational or Stopped
states to Initialization. After the Reset Node instruction, all objects (1000h-9FFFh) are re-
set to the Voltage On stage.
Reset Communication:
This is an instruction for transition from Operational or Stopped to Initialization. After
the Reset Communication instruction, all communication objects (1000h-1FFFh) are re-
set to the initial state.
In the various communication states, nodes can only be accessed via CANopen using spe-
cific communication services. Further, the nodes in the various states only send specific
telegrams. This is clearly shown in the following table:
10.7.7
Error Control Services
Two possibilities exist for performing Error Control:
- Node Guarding/Life Guarding
- Heartbeat
Node Guarding/Life Guarding
With Node Guarding, the CANopen master sends each slave an RTR telegram (Remote
Transmit request) with the COB-ID 1792 (700h) + node-ID.
Using the same COB-ID, the slave responds with its communications state, i.e. either
Pre-Operational, Operational or stopped.
The CANopen slave also monitors the incoming RTR telegram from the master.
The cycle of the incoming RTR telegrams is set using the Guard Time Object.
The number of RTR telegrams which can fail (at a maximum) before the slave initiates a
Life Guarding event is defined using the Life time factor object.
The Node Life Time is calculated from the product of the Guard Time and Life Time Fac-
tor. This is the maximum time that the slave waits for an RTR telegram.
The figure below shows a Node Guarding/Life Guarding protocol.
Initializing
Pre-Operational
Operational
Stopped
PDO
X
SDO
X
X
Synchronization Object
X
X
Emergency Object
X
X
Boot-Up Object
X
Network Management object
X
X
X
Содержание MIS23 Series
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Страница 71: ...JVL Industri Elektronik A S User Manual Integrated Stepper Motors MIS23x 34x 43x 69 5 Description of functions ...
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Страница 189: ...JVL Industri Elektronik A S User Manual Integrated Stepper Motors MIS23x 34x 43x 187 9 Building Sequential Programs ...
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Страница 261: ...JVL Industri Elektronik A S User Manual Integrated Stepper Motors MIS23x 34x 43x 259 11 Modbus interface ...
Страница 265: ...JVL Industri Elektronik A S User Manual Integrated Stepper Motors MIS23x 34x 43x 263 12 Stand alone electronics ...
Страница 278: ...276 JVL Industri Elektronik A S User Manual Integrated Stepper Motors MIS23x 34x 43x 13 Technical Data ...
Страница 288: ...286 JVL Industri Elektronik A S User Manual Integrated Stepper Motors MIS23x 34x 43x 13 7 Trouble shooting guide ...
Страница 294: ...292 JVL Industri Elektronik A S User Manual Integrated Stepper Motors MIS23x 34x 43x 14 5 Connection to PLC PC Boards ...
Страница 296: ...294 JVL Industri Elektronik A S User Manual Integrated Stepper Motors MIS23x 34x 43x 15 1 Cables ...
Страница 301: ...JVL Industri Elektronik A S User Manual Integrated Stepper Motors MIS23x 34x 43x 299 16 Appendix ...
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Страница 336: ...334 JVL Industri Elektronik A S User Manual Integrated Stepper Motors MIS23x 34x 43x 17 Declarations ...
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Страница 342: ...340 JVL Industri Elektronik A S User Manual Integrated Stepper Motors MIS23x 34x 43x 17 4 Index ...