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ATI

Q46 Ethernet/IP Communications Manual

1.3

Ethernet/IP Transmission Details

It should be understood that Ethernet/IP is simply an application layer protocol

that is transferred over an Ethernet hardware link. The word "Ethernet" simply

refers to the common physical cable, perhaps running to an office PC.

In the OSI model, "Ethernet" is the lower part of the model, the physical transfer

method or the hardware.

transferred, which is specified near the top of the OSI model. In the common

office network, many different standard communication protocols are operating

during normal office use, like IP, TCP, etc. None of these are designed to handle

the CIP industrial format, so that interface must be handled by a specific program

that recognizes the format. Because of this, an Ethernet/IP device cannot be

directly connected to your office network for transferring information.

The data for the protocol is constructed into a specific structure inside a standard

TCP/IP Packet. A user application program simply decodes the structure inside

the received TCP or UDP packet. The data structure consists of a grouping of

data values called Attributes inside other sets of containment data called Objects.

There are Ethernet/IP required Objects and application Objects. Required

objects are typically - Identity, TCP, and Router. Application objects consist of

some defined data types, like a Motor Object, and some user specific data

types.

1.4

Use the following instructions to install the Ethernet/IP Communications Option

into an existing Q46 Analyzer. Monitors ordered with the Ethernet option will be

supplied with the board already installed.

1. Disconnect power to the Q46 prior to installation of the board.

2. Remove the connector cover on the power supply circuit board located next to

the fuse.

3. Carefully plug the Ethernet/IP circuit board into the connector on the power

supply board.

4. Align the cover board holes with the holes in the circuit board and use the screws

supplied to secure the assembly. Refer to Figure 1 on the next page for the

proper assembly.

It says nothing about the way information is