SERCOS is a communicating protocol with serial and re - al-time communication for synchronous control.
SERCOS是一种用于同步控制的串行实时通信协议。
Although it is cheap, the time-relay, with the low control precision, stability, reliability and other performance, can't satisfy the demand for higher quality of Cu-Al pipe welding.
虽然时间继电器成本低，但若达到铜铝管焊接高质量，其时间控制精度、稳定性、可靠性等性能指标已不能满足要求。
The key of Cu-Al pipe butt welding is to control the welding parameters. In the original control system, all welding parameters were controlled by time-relays.
铜铝管焊接的关键是对焊接参数的控制，原控制系统采用时间继电器控制焊接参数。
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