CiA® 461 series: CANopen profile for weighing devices

The device profile family for weighing devices specifies the CANopen interface including the PDO mapping and the necessary configuration parameter. Part 1 and part 2 were released CiA-internally as Draft Standard Proposal (DSP) in summer 2015.

Part 1 of this series provides some general definitions including several legal for trade (LFT) modes. It describes also the data encryption and data exchange procedure. Additionally, the sealing and the password changing procedure are described briefly. Of course, this part specifies some common communication parameter of the CANopen interfaces for weighing devices.

Part 2 specifies the CANopen interface for load cells. Load cells are transducers that generate an electrical signal with a magnitude proportional to the measured force. Eight device classes are described. The profile specifies several compensation techniques for gravity, inclination, temperature, and movement acceleration. In case of external compensation, the compensation values are mapped into the four default RPDOs. The two specified default TPDOs provide the load cell weight output value plus weight status and alarm information, respectively the weight status and the process data random number as well as the process data signature. The configuration parameters include the data sample rate and filter settings, for example, for Bessel, Butterworth, or Notch characteristics.

Part 3, which has not yet been developed, will deal with scale devices.

Part 4 is intended for special human machine interfaces and indicator devices related to weighing applications.

Title Details
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CiA 461-1 version 1.0.0CANopen profile for weighing devices - Part 1: General definitions
DescriptionThis profile specifies CANopen interface for electronic weighing instruments such as load cells, scales and auxiliary devices as specific I/O modules like input panel or indicator. This CANopen profile for weighing devices consists of the following parts: Part 1: General definitions, Part 2: Device profile for load cells, Part 3: Device profile for scales, Part 4: Device profile for HMI or indicator. This part specifies general definitions. This includes the lower layer definitions as well as general communication parameters and application layer functionality.
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DSP253 KiB2015-08-10Login
CiA 461-2 version 1.0.0CANopen profile for weighing devices - Part 2: Device profile for load cells
DescriptionThis profile specifies CANopen interface for electronic weighing instruments as load cells scales and auxiliary devices as specific I/O modules like input panel or indicator. This CANopen profile for weighing devices consists of the following parts: Part 1: General definitions, Part 2: Device profile for load cells, Part 3: Device profile for scales, Part 4: Device profile for HMI or indicator. This part specifies device profile for load cells. This includes process data and configuration parameters as well as PDO communication and mapping parameters.
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DSP829 KiB2015-08-10Login
CiA 461-1 version 1.0.4CANopen profile for weighing devices – Part 1: General definitions
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WD692 KiB2017-01-19Login
CiA 461-2 version 1.0.4CANopen profile for weighing devices – Part 2: Device profile for load cells
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WD1.2 MiB2017-01-19Login
CiA 461-3 version 0.0.7CANopen profile for weighing devices – Part 3: Device profile for scale
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WD1.6 MiB1970-01-01Login
CiA 461-4 version 0.0.4CANopen profile for weighing devices – Part 4: Device profile for indicator
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WD516 KiB2017-01-19Login