lost; only absolute value multi-turn encoder can be really safe to use in the gantry crane equipment, it is not subject to power outages jitter, can be a long distance, the number of turns of the work of the characteristics of the internal digitalization, interference resistance, signals can be realized over long distances to achieve safe transmission. Transmission. Therefore, from the point of view of the safety of gantry crane equipment, absolute multi-turn encoder is the inevitable choice.
CAN-bus (ControllerAreaNetwork) is one of the most widely used open field buses in the world
. As a technologically advanced, highly reliable, functional and cost-effective remote network communication control method, CAN-bus
has been widely used in various automation control systems. For example, CAN-bus has unparalleled superiority in various fields such as automotive electronics, automatic machinery, intelligent buildings, electric power systems, security monitoring, marine transportation, elevator control, fire safety, medical equipment, etc.
CAN-bus has been widely used in various automation control systems, such as automotive electronics, automatic machinery, intelligent buildings, electric power systems, security monitoring, marine transportation, elevator control, fire safety, medical equipment, etc.
CAN-bus has been widely used in various automation control systems. With its low cost of development and maintenance, high bus utilization, long transmission distance (up to 10Km), high transmission rate (up to 1Mbps), multi-master structure according to priority, and reliable error detection and processing mechanism, CAN-bus comprehensively makes up for the deficiencies of low bus utilization, single-master-slave structure, and no hardware error detection of the traditional RS-485 network, which enables users to set up a stable and efficient fieldbus control system to generate the greatest practical value. In harsh environments such as lifting equipment, Can-bus is able to transmit data even in the presence of strong interference and unreliable grounding due to its reliable signal error detection and processing mechanisms, while its hardware error self-testing and multi-master redundancy features ensure the safety of the control equipment.
Canopen is an open protocol based on the CAN-bus, which is managed by the CiA Association, and is mainly used in the automotive industry, industrial
machinery, intelligent buildings, medical equipment, marine machinery, laboratory equipment, and research fields. The Canopen specification allows for the transmission of messages in a broadcast mode, and also supports sending and receiving of data on a point-to-point basis. The Canopen object dictionary allows users to perform network management, data transfer, and other operations.
In particular, Canopen has anti-jamming and multi-master application features, which can form the actual master redundancy backup, and realize more secure control.