Types of PLC 1)Modular type, 2)compact type

1. Types OF PLC

2. Types of PLC
Types of PLC
Moduler
PLC
Compact
PLC

3. Moduler Type PLC
• This type of PLC permits
multiple expansion through
“modules”, hence referred to
as Modular PLC.
• I/O components can be
increased.
• It is easier to use because
each component is
independent of each other.
A Moduler Type PLC

4. Compact Type PLC
Within a single case, there would be many modules.
It has a fixed number of I/O modules and external I/O cards.
So, it does not have the capability to expand the modules.
Every input and output would be decided by the manufacturer.
PLC are divided into three types based on output namely Relay
output, Transistor output, and Triac Output PLC.
The relay output type is best suited for both AC and DC output
devices. Transistor output type PLC uses switching operations
and used inside microprocessors.

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 PLC Inputs and Outputs.....

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