SPAD346C3 Position Sensor

SPAD346C3 Position Sensor

SPAD346C3 to ensure the monitoring of each system parameter of the transmitter, the use of optical isolation analog measurement conditioning circuit as shown in Figure 5 with TP521 as the core [3], as long as the adjustment of the variable resistance in the figure, and the appropriate setting of the coefficient factor of the SM331 module, you can achieve the accurate measurement of the parameters; and in the HMI of the configuration of the HMI display, to achieve the purpose of remote monitoring of the transmitter parameters.

The software design of SPAD346C3 system mainly includes PLC software design, HMI design of the upper position of industrial PC and HMI design of the local control touch screen TP270. PLC program design mainly realizes data measurement, status monitoring, judgment of control strategy and Wincc data communication with the upper position.

SPAD346C3 in the Wincc configuration software environment, respectively, the design of the transmitter’s operation flow chart, status monitoring chart, parameter measurement display chart, parameter trend curve graph; and has an alarm record, report generation, printing and other functions. Local control of the touch screen TP270 HMI design is completed in the Protool environment configuration, its functions and Wincc configuration of the HMI is more or less the same. As shown in Figure 6 its human-machine interface (HMI), divided into the operation process area, the transmitter parameter measurement and monitoring area, transmitter status monitoring area and function selection area.