PLC digital signal and analog signal input and control and sensor and PLC connected to note -

PLC is based on the logic control and sequence control, which as a heavy relay control cabinet, a replacement for ac contactor control cabinet, better realizing industrial control automation, intelligent. Sensors: itself is a kind of front-end acquisition module, the running status of field devices, are pressure, liquid level, such as signal into standard PLC control signal, used to provide input PLC control.

a, sensors, signal types: 1, the analog signals, voltage or current signal. Used to provide PLC devices such as analog input signal. Level such as: pressure transmitting signal, analog signal, temperature signal transmitting, the differential analog signal, the valve opening feedback signal, and so on are analog signals. Supplement: standard voltage signal is commonly: 1 v - 5 v, the standard of current signal is commonly: ma - 4 20mA。 Of course there are other non-standard voltage current signal.

general digital signal into two state 0 s and 1 s, make or break, to provide PLC devices such as on-off signal.

2, the corresponding PLC has a different input and output port: 1, the analog input port: accept analog signal of sensors and other equipment. 2, the digital quantity input port: accept sensor devices such as digital signal. 3, the analog output port: to control the analog output, etc. For example: the control valve opening. 4, the digital output port: used to control the circuit on and off, etc.

3, industrial automation control, sensor belongs to the front-end signal measuring equipment, PLC centralized control signal processing, and output actuators, etc. 1, analog sensor and PLC analog input port, the corresponding output port can be analog signals can be digital control signals. 2, digital sensor and PLC digital input port, the corresponding output port for digital signal in general.

4, sensor and PLC connected to note: 1, the types of sensor signal needs and PLC input port type are the same. 2, there are many kinds of PLC, general PLC controller has a digital input ports can be directly by digital signal. 3, if there is no analog input ports of PLC, be fitted with the same type of analog module. General PLC will match 1 - 2 sets of analog ports.

Shenzhen Coolmay Technology Co., Ltd. promises that we will manufature our products in accordance with the strictest quality standards.
Shenzhen Coolmay Technology Co., Ltd. is committed to supplying the consumer and our customers with the finest, high-quality products and to leading the industry in plc manufacturers programmable control systems.
Shenzhen Coolmay Technology Co., Ltd. , a manufacturer of plc manufacturers, might emphasize less hassle or less wasted time rather than emphasizing reliability or quality.
Shenzhen Coolmay Technology Co., Ltd. provides a way for you to understand your customers, to learn what makes them unique and what motivates their behavior. We can then leverage that wealth of information to personalize our interactions and demonstrate that plc manufacturers is valuable to our customers.