Device Outline; Devices Constructing Plc - Mitsubishi Electric MELSEC-Q Structured Programming Manual

FXCPU Structured Programming Manual
[Device & Common]
1.

Device Outline

This chapter explains basic contents of devices.
1.1

Devices Constructing PLC

Each PLC has many built-in relays, timers, counters, etc.
Each of which has many normally-open contacts and normally-closed contacts.
Connect these contacts and coils to construct a program.
Each PLC also has built-in memory devices including data registers (D) and extension registers (R) to store
numeric data.
1 Device Outline
1.1 Devices Constructing PLC
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