Chapter 4 Operation 4.4 Receiving and Forwarding of I/O Signals Necessary for Operation
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4.4 Receiving and Forwarding of I/O Signals Necessary for Operation
I/O port is an area that data is sent and received between this product and external signals via the
interface.
One port can exchange data for one contact (1 bit).
Data is exchanged via PIOs (24V I/Os) or over a Field Network.
Either a PIO or Field Network can connect to each port at a time.
Whether to use PIO or Field Network is set by a parameter.
Refer to Section 3.3.4 for the I/O interface.
For the Field Network Interface, refer to each operation manual.
(Host)
TTA
I/O unit
Field
Network
Master unit
Data exchange
Data exchange
1 port
Connected
internally.
(Assignments
are set by
parameters.)
I/O Ports
Input
Port
Output
Port
Indicates flow of data.
I/O interface
Expansion I/O
board
Field Network
interface
DeviceNet board
CC-Link board
PROFIBUS
board
EtherNet/IP
board
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