Comtrol IO-Link Master EIP-4 - Manual (Page 61)

IO-Link Master EtherNet/IP Reference Manual: 2000589 Rev. A Chapter 3. EtherNet/IP CIP Object Definitions - 61
Grouping of Assembly Instances
3.12.8. Grouping of Assembly Instances
In order to minimize the number of required I/O connections, the input and output assembly instances are
organized as follows. The Input Assembly instances are grouped into one continuous array with no gaps
between the instances. The same is also true for Output Assembly Instances.
Where:
• All accessible data can be read (input) and written (output) from one I/O connection.
• Controller Read (Input) access:
- One or more input instances may be read with one I/O connection. (i.e. If addressing the instance 101,
all input instances for both PDI and PDO data, 101 to 108, may be read in one connection.)
- The length of the Read (Input) connection can range from 1 to the total length for all input instances.
- Multiple controllers can read access to the Input Assembly instances at one time.
• Controller Write (Output) access:
- Only output instances may be written.
Assembly Controller Access
Assembly
Instance
Number
Controller
Port 1 Access
Controller
Port 2 Access
Controller
Port 3 Access
Controller
Port 4 Access
Read
(Input)
Write
(Output)
Read
(Input)
Write
(Output)
Read
(Input)
Write
(Output)
Read
(Input)
Write
(Output)
Read
(Input)
Process
Data
Input
101
(Port 1)
102
(Port 2)
103
(Port 3)
104
(Port 4)
Read
(Input)
Process
Data
Output
105
(Port 1)
106
(Port 2)
107
(Port 3)
108
(Port 4)
Write
(Output
)
Process
Data
Output
109
(Port 1)
110
(Port 2)
111
(Port 3)
112
(Port 4)