
Chapter 3 Operation
62
3.2 Receiving and Forwarding of I/O Signals Necessary for Operation
The I/O port can deliver the data with the MSEL controller and external signals through
interface.
One port can exchange data for one contact (1 bit).
Data is exchanged via PIOs (24V I/Os) or over a fieldbus.
Either a PIO or fieldbus can connect to each port at a time.
Whether to use PIO or fieldbus is set by a parameter.
indicates flow of data.
Refer to Section 2.2.5 for the PIO interface.
For the each fieldbus, refer to each instruction manual.
Host Controller
I/O unit
Fieldbus
master unit
MSEL Controller
I/O Ports
I/O interface
• Standard I/O
• Extension I/O
Fieldbus
interface
• DeviceNet
• CC-Link
• PROFIBUS-DP
• EtherNet/IP
Input
Port
Output
Port
16
316
17
317
18
318
19
319
20
320
21
321
22
322
23
323
24
324
25
325
26
326
27
327
28
328
29
329
30
330
31
331
32
332
Data exchange
Data exchange
Connected
internally.
(Assignments
are set by
parameters.)
Summary of Contents for MSEL
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