01 ▎Beware! The “Death Trap” of PDO Mapping "Last week, the robotic arms at Tesla's Berlin factory suddenly danced in unison, all because a PDO mapping bit was mistakenly set to 1!" German engineer Hans shared this complaint at a bar in Munich, revealing the most dangerous blind spot in CANopen configuration. # EDS file … Read more
In the article “CanOpen Message – Understanding PDO Messages“, a brief introduction to PDO messages is provided. For SDO messages, there are read/write identifiers and object indices, allowing the receiving end to recognize the messages. Meanwhile, PDO messages contain only valid data, so for the receiving end to identify them, both the sending and receiving … Read more
CANopen to DeviceNet Slave — ADFweb Converter – Guangzhou Xinyu IoT Author: Zou Wuyi Mobile185-020-77899 Email: [email protected] 1 Product Features HD67134 – A1 is a CANopen / DeviceNet slave converter. It has the following features: Provides triple isolation between CANopen and power, CANopen and DeviceNet, and power and DeviceNet. Can be mounted on a 35mm … Read more
CANopen to CANopen – ADFweb Gateway Converter–Guangzhou Xinyu IoT Author: Zou Wuyi Mobile185-020-77899 [email protected] 1、Product Features: The CANopen to CANopen gateway has the following features: Realizes high-level bidirectional conversion of information between two different CANopen buses; Provides electrical isolation between the two buses; Can associate device module objects located on different buses, which can be … Read more
CANopen / Modbus Master – HD67001 Converter Author: Zou Wuyi Mobile 185-020-77899 Email [email protected] Configuration Description: The “CANopen/Modbus Master– Converter“ allows communication between the CANopen network and the Modbus network. You need to install Compositor SW67001 software on your computer to perform the following operations: Define the CANopen frames read from Modbus; Define the CANopen … Read more
In the CANopen device model, the primary communication objects are PDO and SDO. So, can they be used simultaneously in a CANopen device? Of course, SDO (Service Data Object) and PDO (Process Data Object) can be used simultaneously. In fact, they serve different purposes in the CANopen network and are often used together to optimize … Read more
CANopen to Modbus Slave – HD67002 Gateway Converter Author: Zou Wuyi Mobile185-020-77899 [email protected] 1、Product Features:The configurable CANopen Modbus RTU Slave Converter has the following features: Realizes bidirectional information exchange between CANopen network and ModBUS network; Provides electrical isolation between the two buses; Allows writing to SDO (Service Data Object) via ModBUS words; Allows reading of … Read more
1, NMT Messages CANopen devices have three states: pre-operational, operational, and stopped. By default, after startup, they automatically enter the pre-operational state, during which PDO messages cannot be sent. If PDO messages need to be sent, the device must be manually switched to operational (run) state after startup. The following message can be sent to … Read more
1、 NMT Messages 1.1、NMT Module Control Only the NMT-Master node can send NMT ModuleControl messages. All slave devices must support NMT module control services. The NMT Module Control message does not require a response. The NMT message format is as follows: NMT-Master → NMT Slave When Node-ID=0, all NMT slave devices are addressed. CS is … Read more
In the previous article, we briefly introduced the CANopen framework and the seven types of CANopen services. In this article, we will elaborate on the Object Dictionary, SDO, and PDO of CANopen. This series of articles mainly introduces the CANopen protocol, covering topics such as the Object Dictionary, services, SDO, PDO, and master/slave nodes. For … Read more