Industrial Automation Glossary – N, O, P

NAK (Negative AKnowledgement)
an ASCII control code.

NAMUR
A European standards organization.

NAND (Not AND)
a Boolean AND operation with the result inverted.

narrowband
uses a small data transmission rate to reduce spectral requirements. Read more

Industrial Automation Glossary – Q, R

QA (Quality Assurance)
a formal system that has been developed to improve the quality of a product.

quality
a measure of how well a product meets its specifications. Keep in mind that a product that exceeds its specifications may not be higher quality.

R/W (Read/Write)
A digital line that is used to indicate if data on a bus is to be written to, or read from memory. Read more

Operator Interfaces

There are a number of companies who make Operator Interfaces. Here are some of the most popular. Read more

Industrial Workstation Furniture – Enclosures and Benches

Part of the job of specifying an HMI or a SCADA system involves getting the enclosure and industrial furniture to hold your equipment. Here is a list of a number of manufacturers of workstation and industrial enclosures. Read more

Industrial Automation Glossary – S

safety margin
a factor of safety between calculated maximums and rated maximums.

SCADA (Supervisory Control And Data Acquisition)
computer remote monitoring and control of processes.

scan time
the time it takes a PLC read all the inputs, execute the logic and write to all the outputs.

schematic
an abstract drawing showing components in a design as simple figures. The figures drawn are often the essential functional elements that must be considered in engineering calculations. Read more

Industrial Automation Glossary – T, U, V, W, X, Y, Z

T1
a 1.54 Mbps network data link.

T3
a 45 Mbps network data link. This can be done with parallel T1 lines and packet switching.

tap
a connection to a power line.

tare
the ratio between unloaded and loaded weights. Read more

« Previous Page