In addition to the general DI/DO and AD/DA templates,the I/O templates in PLC have also developed a series of I/O templates with special functions,which opens a way for PLC to be used in all walks of life,such as for barcodes ASCII/BASIC template for identification,PID template for feedback control,high-speed counting template for operation control,machining,single-axis position control template,dual-axis position control template,cam positioner template,RFID interface template,etc.,This will be further developed in the future.In addition,the related components of input and output,input and output electrical isolation and ground isolation in strong interference situations will also be more perfect.
The CPU in the PLC cooperates with the memory to complete the control function.It is different from the DCS system that deals with parameters such as temperature,pressure,flow,etc.It adopts a fast circuit scanning period,generally 0.1~0.2s,and a faster scanning period of 50ms or less.It is a digital sampling control system
PLC内的I/O模板,除一般的DI/DO、AD/DA模板外,还发展了一系列特殊功能的I/O模板,这为PLC用于各行各业打开了出路,如用于条形码识别的ASCII/BASIC模板,用于反馈控制的PID模板,用于运行控制、机械加工的高速计数模板、单轴位置控制模板、双轴位置控制模板、凸轮定位器模板、射频识别接口模板等,这在以后还会有很大发展。另外在输入、输出的相关元件、强干扰场合的输入、输出电隔离、地隔离等方面也会更加完善。
PLC中的CPU与存储器配合,完成控制功能。它与DCS系统处理温度、压力、流量等参数的系统不同,采用快速的巡回扫描周期,一般为0.1~0.2s,更快的则选用50ms或更小的扫描周期。它是一个数字采样控制系统
SORENSEN 0-40V@ 0-25A REGULATED METERED DC POWER SUPPLY
SORENSEN raytheon Power Supply SRL 40-12
SORENSEN raytheon Power Supply SRL 40-12
SORENSEN PTM24-2.3 USPP PTM2423
Sorensen HPD15-20 Programmable Benchtop DC Power Supply
Programmable DC Power Supply 15Volts 20Amps