Hardware manual

EtherNet/IP Introduction Impact Reference Guide
Datalogic Automation Inc. 3-192
3. Set & Test Outputs: This section is where you define what you want an output to do.
Note: The number of outputs shown will vary with the Impact device type. Emulators have sixteen out-
puts.
On, Off, Unchanged: Click the radio button under the desired output for the desired output state when
the tool runs. If the output is already in that state, the tool does not change it, unless a pulse was
defined.
Unchanged means that the tool does not change the output when it runs, even if a pulse is defined.
Test Outputs: Click this button to run the tool and view the resultant output state.
EtherNet/IP Introduction
The Impact device is EtherNet/IP compatible. EtherNet/IP is an industrialized extension of Ethernet TCP/IP
communications. The Control and Information Protocol (CIP) is a communications protocol for transferring
automation data and control between two network devices.
In CIP, every network device represents itself as a series of objects. Each object is simply a grouping of the
related data values in a device. The Impact device’s class definition is 100 (hexadecimal 64). Datalogic’s
vendor ID is 921.
The Ethernet/IP Explicit Data and Explicit Message tools use explicit messaging (the data format is explic-
itly defined in the message) which implements a Client/Server relationship and requires a TCP/IP connec-
tion. The Explicit Data tool receives messages and the Explicit Message tool sends messages.
The Ethernet/IP Read Implicit Assembly and Write Implicit Assembly tools use implicit I/O (the data format
is not in the message but is implied by the pre-defined assembly object) and a UDP/IP connection.
VPM provides the following four tools that allow the Impact device to exchange data with other devices on
the network using EtherNet/IP protocol.
Datalogic provides an EtherNet/IP Electronic Data Sheet file. See “Using an Electronic Data Sheet (EDS)
file” on page 3-194.
EtherNet/IP Explicit Data
In the Communication Drawer
The EtherNet/IP Explicit Data tool provides a way to receive explicit messages from other devices that com-
municate via EtherNet/IP protocol. It has no fixed inputs or outputs, but inputs can be added to provide six
standard data types. These inputs define the layout of the incoming data packet. To create a new input, click
Add Input, then select the data type from the type properties drop down.
The tool has an additional General property - Instance.
• Instance - An EtherNet/IP device sends a data packet which contains an Instance number and other
data. If this tool’s Instance number matches that of the incoming packet, the data is available in this
tool’s inputs.
EtherNet/IP Explicit Message
In the Communication Drawer
The EtherNet/IP Explicit Message tool creates a message for setting or requesting data on another Ethernet/
IP device. The tool’s fixed inputs define the required parts of the message.