CJ1W-EIP21 Omron, CJ1W-EIP21 Datasheet - Page 327

• Manufacturer Part Number: CJ1W-EIP21
• Description: Ethernet I/P Module
• Manufacturer: Omron

Specifications of CJ1W-EIP21

• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

CPU Bus Unit Service
Cycle (Local Node, 2)
CPU Bus Unit Service
Processing Time (Local
Node, 2)
Message Service Transmission Delay
Note
For details, refer to the CPU Unit’s Operation Manual.
The following table shows the CPU Bus Unit service cycle, which depends on
the CPU Unit’s CPU processing mode setting.
For details, refer to the CPU Unit’s Operation Manual.
The following table shows the CPU Bus Unit service processing time, which
depends on the CPU Unit’s CPU processing mode setting.
For details, refer to the CPU Unit’s Operation Manual.
Depending on the actual operating environment, the transmission time may
be longer than the one calculated with the equations given here. The following
factors can cause longer transmission times: other traffic on the network, win-
dow sizes of network nodes, other traffic at the EtherNet/IP Unit or built-in Eth-
erNet/IP port itself (e.g., simultaneous tag data link communications), and the
system configuration.
Parallel processing with syn-
chronous memory access
Parallel processing with asyn-
chronous memory access
Normal Mode (See note.)
Priority peripheral servicing
Parallel processing with syn-
chronous memory access
Parallel processing with asyn-
chronous memory access
Normal Mode (See note.)
Priority peripheral servicing
Parallel processing with syn-
chronous memory access
Parallel processing with asyn-
chronous memory access
Note CJ2 CPU Units support only Normal Mode.
Note CJ2 CPU Units support only Normal Mode.
Note CJ2 CPU Units support only Normal Mode.
CPU execution mode
CPU execution mode
CPU execution mode
4% of CPU Unit cycle time
1 ms max.
One CPU Unit cycle time
EtherNet/IP Unit or
built-in EtherNet/IP
port is given prior-
ity.
EtherNet/IP Unit or
built-in EtherNet/IP
port is not given
priority.
One CPU Unit cycle time
0.2 ms + peripheral servicing time (1 ms max. for
peripheral servicing of each Special I/O Unit, CPU
Bus Unit, peripheral port, RS-232C port, and Inner
Board)
4% of CPU Unit cycle time
(10% for CJ2 CPU Units)
EtherNet/IP Unit or
built-in EtherNet/IP
port is given prior-
ity.
EtherNet/IP Unit or
built-in EtherNet/IP
port is not given
priority.
4% of CPU Unit cycle time
1 ms max.
Processing time details
Processing time details
Processing time details
Time slice instruction execution
time
One CPU Unit cycle time
Time slice peripheral servicing
execution time
Set peripheral servicing time
(Default: 4% of CPU Unit cycle
time)
Section 10-5
299