Omron EJ1

5
I/O Configuration and Main Functions Section 1-2
1-2 I/O Configuration and Main Functions
1-2-1 I/O Configuration
TC4: Four-channel Basic
Unit
• Internal device I/O are connected via a connector to the adjacent Unit.
TC2: Two-channel Basic
Unit
• Internal device I/O are connected via a connector to the adjacent Unit.
HFU (Advanced Unit)
• Internal device I/O are connected via a connector to the adjacent Unit.
• Communications between devices are connected to TC4 or TC2 host
device communications.
Inside the device
Control
section
Main input 1
Main input 2
Main input 3
Main input 4
Control output 1
Control output 2
Control output 3
Control output 4
G3ZA communications
Port A communications
Port B communications
Internal bus 1
Internal bus 2
Internal bus 3
Inside the device
Control
section
Main input 1
Main input 2
Control output 1
Control output 2
Control output 3
Control output 4
G3ZA communications
Port A communications
Port B communications
Internal bus 1
Internal bus 2
Internal bus 3
Event input 1
CT input 1
CT input 2
Event input 2
Inside the device
Control
section
Port C communications
Port A communications
Internal bus 1
Internal bus 2
Internal bus 3
Event input 1
Event input 2
Event input 3
Event input 4
Auxiliary output 1
Auxiliary output 2
Auxiliary output 3
Auxiliary output 4
Communications
between Units