In the previous two issues of this newsletter, we looked at troubleshooting digital input modules. Basically, we looked for the presence or absence of a voltage. With analog modules, it's trickier ...
Does the module's output correspond correctly to its input? Determine that by forcing the PLC output to 10%, 25%, 50%, 75%, and 90% and measuring on the output terminals at the corresponding range ...
AutomationDirect's Productivity2000 programmable logic controller provides two independent single-ended 5-24 VDC inputs that accept up to 100kHz of pulse/direction and quadrature signals. The ...
The Click PLC from AutomationDirect now includes three analog CPU models. They feature two analog inputs and two outputs with voltage ranges of up to 5 vdc or current up to 20 mA. The modules include ...
Narrow-band low-frequency power-line communications (NB LF PLC) relies on the modem's power supply unit for good performance. This article introduces a design for a PLC-compatible PSU. Narrow-band low ...
Company Announcement - IDEC announces a new model in its FT1A Touch micro programmable controller series of combo HMI+PLC units, the FT1A Touch 14 I/O. New features make the FT1A Touch 14 I/O suitable ...
Easing the burden of supporting multiple regions with one device, Texas Instruments (TI) announced a new power line communication (PLC) modem platform that supports the G3, PRIME and IEEE-1901.2 ...
Semitech offers the SM2480, a single chip that integrates a grid-connected analog and PWM signal controller and an N-PLC (narrowband power-line communication) modem for use in solar inverters, ...
A programmable logic controller (PLC) is an industrial solid-state computer that monitors inputs and outputs, and makes logic-based decisions for automated processes or machines. 1. The image above is ...
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