Rockwell-automation 1761-NET-ENIW MicroLogix Ethernet Interface (ENI) Manual de usuario descargar pdf (Pagina 133)

1 Publication 1761-UM006E-EN-P - August 2005

Appendix

1761-NET-ENI/ENIW Performance

Considerations

Ethernet/IP Connections

The ENI/ENIW supports 6 concurrent TCP/IP connections: 2

incoming, 2 outgoing and 2 that can be allocated as incoming or

outgoing. Connection use can be viewed on the Diagnostics tab of the

ENI/ENIW web page (series D only).

Each TCP/IP connection simultaneously supports up to:

• 4 CIP connections

• 5 Unconnected sends

Packet Size Limitations

Each TCP/IP connection has its own DF1 queue. Each DF1 queue has

10 message buffers. The size of each message buffer is 580 bytes.

Using SLC-type reads, the following array sizes can be read over

Ethernet via the ENI/ENIW using the RSLinx OPC Test Client:

• MicroLogix - 248 bytes of data

• SLC 500 - 236 bytes of data

• CompactLogix - 250 bytes of data

These limitations are due to serial port packet size limitations of the

respective controllers, not the ENI/ENIW.

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Rockwell-automation 1761-NET-ENIW MicroLogix Ethernet Interface (ENI) Manual de usuario Pagina 133