Importance of Guarding against Electrostatic Discharge (ESD)
Electrostatic Discharge (ESD) refers to the sudden flow of electricity between two electrically charged objects.
Category: PLC
Purpose of backup batteries in PLC
The Purpose of backup batteries in PLC is to prevent data loss, especially when volatile memory systems are being.
Overview of Memory Section
The memory refers to the section of the PLC where data and instructions are stored (either temporarily or semi-permanently).
PLC Processor Unit (CPU)
The central processing unit (CPU) is the brains of the PLC. Processors usually contain a microprocessor that implements the logic and control.
PLC Chassis Installation Considerations
There are a few things that you must consider for PLC Chassis Installation Considerations are Environment, Electrical Noise, Shielding, Grounding.
Define Analog I/O Modules?
Analog I/O modules usually have many input channels that allow multiple sensors or devices to interface with the PLC.
Special Discrete Modules
In Programmable Logic Controllers, Special Discrete Modules are Contact Output, Interposing Relay cards, and TTL I/O Modules.
Overview of DC Output Modules
Discrete output modules are used to turn field output devices on or off. These are available in AC and DC and in a variety of voltages and current rat…
Purpose of Output Fuses and Blown-fuse Indicators
The purpose of the blown fuse indicator is to simplify troubleshooting for a technician. If the indicator is true or on, this means the fuse is blown.
AC Discrete Output Modules
For AC discrete output modules in the PLC, you must use circuitry that can handle 120 volts or 230 VAC (the standard for AC voltage).
