And, the ability to monitor PLC logic in ladder diagram format also made troubleshooting easier for those already familiar with relay-based control systems. Although there are many higher-level ...

The Corona design provides the front-end interface circuit of a PLC digital input module. The design accepts high-voltage inputs (36V, max) and features isolated power and data, ... The Corona input ...

PLC Evaluation System The PLC evaluation system described here integrates all the stagesneeded to generate a completeinput/output design. It contains fourfully isolated ADC channels, an ARM7 ...