GE PACSystems RX3i

Chapter 6. Redundant Media
134 PACSystems* RX3i & RSTi-EP PROFINET IO-Controller User Manual GFK-2571N
6.1.8 Third-party MRP Manager Use with PROFINET Controller as MRP
Client
When using a third-party MRP Manager, it is recommended to set the MRP Manager Test Monitoring
Interval to 10ms and Test Monitoring Count to 2 and/or connect the PROFINET Controller client
directly to a device that provides fast link down detection.
Failure to follow these recommendations may result in degraded MRP Ring update performance for
bumpless operation, due to the speed at which ring breaks are detected.
Use the tables below as a guide when choosing not to follow the recommendations.
CPE100/CPE115 Embedded PROFINET IO-
Controller
Ring Port Connection
Minimum Recommended I/O Update Rate
(ms)
Cu Fixed Ports @100Mbps
16
CPE330/CPE400 Embedded PROFINET IO-
Controller
Ring Port Connection
Minimum Recommended I/O Update Rate
(ms)
Cu Fixed Ports @100Mbps
8
Cu Fixed Ports @1Gbps
17
64
PNC001 Ring Port Connection
(Port Type or SFP Type)
Minimum Recommended I/O Update Rate
(ms)
Cu Fixed Ports @100Mbps
2
Cu Fixed Ports @1Gbps
512
Cu SFP @100Mbps
4
Cu SFP @1Gbps
512
100Base FX SFP (MMF) – 100Mbps
16
100Base LX10 SFP (SMF) – 100Mbps
16
1000Base SX SFP (MMF) - 1Gbps
32
1000Base LX SFP (SMF) - 1Gbps
64
1000Base ZX SFP (SMF) - 1Gbps
64
Disclaimer: Performance numbers for SFPs are with GE branded SFPs, or are supported / tested only
with Avago or Finisar vendors. Other vendors may produce varying performance results.
17
Note that if the port is configured as a Critical Network Port, the data rate is forced to 100Mbps. This results in the
minimum update rate as indicated in the row above. For further details, refer to Critical Network Ports in Section 3.5.2.