Chapter Selecting a PLC

1
Chapter - Selecting a PLC
Criteria Number of logical inputs and
outputs. Memory Number of special I/O
modules Scan Time Communications
Software
2
A Detailed Design Process 1. Understand the
process 2. Hardware/software selection 3. Develop
ladder logic 4. Determine scan times and memory
requirements 5.
3

• Special IO Requirements
• Analog IO
• Encoders
• PID
• Communications