Flexible in Nature: One model of PLC can be used for different operations as per requirement.
Easy to install and troubleshooting: In hard wired relay based systems, installation time is more as compared to the PLC based control panels.
Availability of Large contacts: PLC programming tools contain internal large number of contacts that can be used for any change induced in different applications.
Cost effective: Advanced technology and large production of PLC makes it cheaper than the other controller or relay based systems.
Simulation feature: PLC programming software comes with the simulation features by default.
Simple programming methods: PLC is provided with simple programming methods to program the PLC like Ladder or Boolean type of programming.
Ease of maintenance: As compared with the control systems like relay based or micro-controller based systems, maintenance cost of PLC is low.
Documentation: The programmer can program and print easily the programs of PLC for future use.
