CANopen TPDO AND RPDO

[Zhangfy]

Hi

I have problem to understand how to use TPDO and RPDO with LV2017.

Now i have the hardware pci8531.

I have three hardware with CANopen. In the old version threre are Node1 , Node 2 and Node 3 for the name of Hardwares. The old card is PCI Serie 2.

For example :

RPDO1 and TPDO1 from the same Node.

It means RPDO1 fetches the data from device. and TPDO1 transmits the data to software control center, right?

For the three devices i need three nodes. So i can fetch the data from devices, right?

Do i need also SDO and Sync in the program? Thanks!

[GerdW]

Hi Zhang,

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@Zhangfy wrote:

For example :

RPDO1 and TPDO1 from the same Node.

It means RPDO1 fetches the data from device. and TPDO1 transmits the data to software control center, right?

---

TPDO transmits data from your device, RPDO is received by your device.

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@Zhangfy wrote:

For the three devices i need three nodes. So i can fetch the data from devices, right?

Do i need also SDO and Sync in the program? Thanks!

---

Which CANopen driver do you use? Mind to share your VI?

SDOs usually are used for configuration of CANopen devices.

In my experience SYNC is needed for TPDO/RPDO…

[Zhangfy]

Industrial communication 2018

[GerdW]

Hi Zhang,

haven't used that toolkit so far.

I recommend to read some basic introductions like Wikipedia…

[Zhangfy]

Thanks! I learnt a lot from your suggstion.