ELAP MEM440-Bus, Инструкция по эксплуатации

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MEM-BUS
EtherNet/IP™ ENCODER
Instruction Manual
ENIP_Manual_ENG 17/07/2018
4
1 EtherNet/IP™
1.1 General information
EtherNet/IP™ ( E thernet I ndustrial P rotocol) is a frame-based computer networking technology for local
industrial area networks.
It follows the seven layers of the OSI (
O pen S ystem I nterconnection) model:
Layer Function
7. Application It supplies network services to end-user application.
6. Presentation It handles syntax processing of message data such as format conversions and
encryption / decryption needed to support the application layer above it.
5. Session It manages the sequence and flow of events that initiate and tear down
network connections. It is built to support multiple types of connections that
can be created dynamically and run over individual networks.
4. Transport It delivers data across network connections. Different transport protocols
may support a range of optional capabilities including error recovery, flow
control, and support for re-transmission.
3. Network Logical addressing is translated here into physical addressing.
2. Data Link It checks for physical transmission errors and packages bits into data
"frames".
1. Physical It is responsible for ultimate transmission of digital data bits from the
Physical layer of the sending (source) device over network communications
media to the Physical layer of the receiving (destination) device.
Table 1.1 – OSI model layers
1.2 CIP™ Protocol
As an application layer (number 7 in the OSI model), EtherNet/IP uses the Common Industrial Protocol
(CIP™) for process control. ELAP MEM-BUS encoder meets all the requirements of the EtherNet/IP protocol
according to IEC61784-1 and those of the encoder profile.
The encoder is an I/O adapter in the EtherNet/IP. It receives and sends explicit and implicit messages either
cyclic or on request (polled).