Planning the I/O Wiring Routes ............................................................................. 3–20
Wiring I/O Modules ................................................................................................3–21
ZIPLink Wiring System Compatibility Matrix for CLICK PLCs................................... 3–22
I/O Wiring Checklist ................................................................................................3–25
System Wiring Strategies ........................................................................................3–26
PLC Isolation Boundaries ........................................................................................3–26
Powering I/O Circuits .............................................................................................3–27
Sinking/Sourcing Concepts ....................................................................................3–28
I/O “Common Terminal” Concepts ........................................................................3–29
DC Input Wiring Methods ...................................................................................... 3–30
DC Output Wiring Methods ................................................................................... 3–30
Relay Outputs - Wiring Methods ............................................................................3–32
Relay Outputs – Transient Suppression for Inductive Loads in a Control System ..... 3–33
Analog I/O Configuration .......................................................................................3–37
Terminal Block Wiring - Analog PLC Units ..............................................................3–37
Terminal Block Wiring - Expansion Analog I/O Modules .........................................3–39
Configuration in the CLICK Programming Software ...............................................3–40
Analog PLC units .................................................................................................... 3–40
Analog I/O Modules ............................................................................................... 3–41
Analog I/O Monitoring ...........................................................................................3–43
High-Speed Input Configuration ............................................................................3–44
Wiring Examples High Speed Inputs .......................................................................3–46
3-Wire Sensors........................................................................................................3–46
Chapter 4 - PLC Communications
Introduction ............................................................................................................... 4–2
PLC Communication Ports Specifications .................................................................4–3
LED Status Indicators .................................................................................................4–5
LED Status Indicators ................................................................................................4–5
DirectLogic Devices That Do Not Work With CLICK PLCs .........................................4–5
3 Steps to Using the CLICK PLC Communications ...................................................4–7
Typical Communication Applications ........................................................................4–8
Port 1 (RS-232) – Modbus RTU Slave Mode Only .....................................................4–8
Port 1 (Ethernet) – Modbus TCP ..............................................................................4–9
CLICK PLC Hardware User Manual, 6th Edition, Rev. F – C0-USER-M
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