PCAN-Optoadapter IPEH-002038 Imprint PCAN® is a registered trademark of PEAK-System Technik GmbH.CANopen® and CiA® are registered community trade marks of CAN in Automation e.V. All other product names mentioned in this document may be the trademarks or registered trademarks of their respective companies. They are not explicitly marked by “™” or “®”.
Its integrated logic means that decoupling can be installed at any point in the CAN network. The PCAN-Optoadapter can be used in CAN FD buses with data bit rates up to 2 Mbit/s and nominal bit rates up to 1 Mbit/s. Properties at a Glance...
The power supply is done via pin 1 of the 9-pin female D-Sub connector (primary side). Therefore the attached CAN interface must provide 5 Volts. Since the PCAN-Optoadapter already contains a CAN bus termination on the primary side, the connected CAN adapter doesn’t need to be terminated separately on this side.
Top view PCAN-Optoadapter 2.1 Connection Primary Side The PCAN-Optoadapter is connected to the CAN interface on the primary side. Pin assignment at the primary side (D-Sub female) The lines for the differential CAN signal CAN_H and CAN_L are terminated on the adapter with a 120-Ohms resistor (fixed).
3 Operation 3.1 Operation A configuration of the PCAN-Optoadapter is not needed. You can use it instantly. For general supply the adapter uses a direct voltage of +5 V. This must be applied to pin 1 of the CAN connector. The CAN interfaces of the PCAN series are able to provide 5 Volts on pin 1.
3.2 Signal Delay The PCAN-Optoadapter has a transit time delay of approx. 80 ns. This corresponds to a cable length of 16 m. Therefore, you should consider the dependence of the maximum length of a CAN bus on the bit rate at the installation of the PCAN-Optoadapter.
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