CJ1W-EIP21 Omron, CJ1W-EIP21 Datasheet - Page 299

• 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

10-2-3 Adjusting Device Bandwidth Usage
Switching Hubs without
Multicast Filtering (100-
Mbps Hubs)
Switching Hubs with
Multicast Filtering (100-
Mbps Hubs)
Adjusting the Communications Load
Note
Performing message communications or other network operations from the
Network Configurator (such as monitoring or other operations that place a
load on the network) or from the user application when the tag data link band-
width usage of capacity is between 80% and 100% can create an excessive
load on the network and result in timeouts. If timeouts occur, increase one or
all of the RPI settings or reduce the usage of capacity.
• Is the network bandwidth without multicast filtering usage under
• Is the usage of capacity without multicast filtering under 100% for each
• Is the total network bandwidth usage under 100 Mbps? (This appears as
• Is the network bandwidth usage under 100 Mbps for each node?
• Is the usage of capacity under 100% for each node?
• Is the total network bandwidth usage under 100 Mbps? (This appears as
Example:
If the RPI is set to 50 ms for all connections and the usage of capacity is
40%, the usage of capacity may increase to 80% when the RPI is reduced
to 25 ms for all connections.
100 Mbps for each node? (This appears as “Mbit/s” in the dialog box
shown on page 269.)
→ If any node exceeds 100 Mbps, change the connections settings, such
as the RPI.
node? (This appears as “Usage of Capacity” in the dialog box shown on
page 269.)
→ If any node exceeds 100%, change the connections settings, such as
the RPI.
“Network Total of Max. Mbit/s” in the dialog box shown on page 269.)
→ If the total bandwidth usage exceeds 100 Mbps, the bandwidth of part
of the transmission path (e.g., a switching hub or media converter) had
been exceeded as the result of how the network was wired (e.g., switch
hub or cascade connection), causing a tag data link to operate abnor-
mally. Check the bandwidth of the transmission path for all cascade con-
nections. If the bandwidth is exceeded, rewire the network or increase the
bandwidth between switching hubs (e.g., to 1 Gbps). If these countermea-
sures are not possible, change the connection settings, e.g., the RPI set-
tings, and adjust the bandwidth for all cascade connections until the total
network bandwidth is not exceeded.
→ If any node exceeds 100 Mbps, change the connections settings, such
as the RPI.
→ If any node exceeds 100%, change the connections settings, such as
the RPI.
“Network Total of Max. Mbit/s” in the dialog box shown on page 269.)
→ If the total bandwidth usage exceeds 100 Mbps, the bandwidth of part
of the transmission path (e.g., a switching hub or media converter) had
been exceeded as the result of how the network was wired (e.g., switch
hub or cascade connection), causing a tag data link to operate abnor-
mally. Check the bandwidth of the transmission path for all cascade con-
nections. If the bandwidth is exceeded, rewire the network or increase the
bandwidth between switching hubs (e.g., to 1 Gbps). If these countermea-
sures are not possible, change the connection settings, e.g., the RPI set-
tings, and adjust the bandwidth for all cascade connections until the total
network bandwidth is not exceeded.
Section 10-2
271