Ethernet/Ip Tag Client - Technology SPX5 User Manual

Ethernet/IP Tag Client

Like in the other protocols configuration, the user has to define data transfer blocks in the
Ethernet/IP Tag Client to transfer a PLC Tag Data to or from the SPX5 internal database.
In figure 24 the "Protocol Settings" section is displayed. These settings identify the Allen Bradley
PLC that the user wants to access and general communication settings. These are the configuration
parameters available in this section:
PLC IP Address: This is the IP Address of an Allen Bradley Ethernet interface card on the same chassis
as the PLC that the user wants to access.
Processor Slot: This is the slot where the PLC resides on the rack. For PLCs with no movable racks
(like MicroLogix and CompactLogix) 0 must be used.
Conn. Timeout: This is the connection timeout when trying to connect to the specified PLC.
Msg. Timeout: This is the timeout from messages on an open PLC Connection.
Like in the other protocols configuration, the user has to define data transfer blocks in the
Ethernet/IP Tag Client to transfer a PLC Tag Data to or from the SPX5 internal database. To create
transfer blocks the buttons in the Data Mapping section are used. When adding or editing a new
data transfer the Tag Setting section will show. This is the detail of all possible configuration
parameters in this section:
Enable: The enable parameter has three options: Disabled: This is used to disable a data transfer
when the user doesn't require the command to be executed but doesn't want to remove it. Enabled:
The data transfer will be executed continuously. On Data Change: The data transfer will happen only
when data changes. This option only works on Writes.
Data Direction: Defines if the configured data transfer will be a Read of PLC data or a Write to the
PLC.
Tagname: This is the name of the tag that the user wants to read or write from the Allen Bradley
PLC. The tag must be defined as a Controller Tag on the PLC. The format for the tag name follows
the standard format defined for Allen Bradley Logix PLCs. Examples of tag names are: tag,
tag.element, tag[index], tag[index].element[index].element.
Data Type: This is the type of the element that is read from the PLC. If the specified data type of the
tag doesn't match during the execution of the command, the data transfer will fail.
Register Count: For accessing tag elements that are not arrays this parameter must be always 1. If
the accessed element of a tag is an array, then this parameter is the number of elements to be read
from that array. If for example the user has a Controller Array Tag with the name EXA and the user
wants to read 20 elements, starting with element 100 up to element 119, then the user will have
to enter a configuration like shown on Figure 25.
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