PLC Modules are in stock at Tenco Electronics.A programmable logic controller (PLC), or programmable controller is an industrial digital computer which has been ruggedised and adapted for the control of manufacturing processes, such as assembly lines, or robotic devices, or any activity that requires high reliability control and ease of programming and process fault diagnosis. Tenco offers inventory, pricing, & datasheets for PLC Modules. To know more, please view our large section of multi-directional switches below.