User manual

112 Publication LOGIX-AP010B-EN-P - May 2010
Chapter 6 Communication and Networking
The dialog box below provides an overview for configuring a consumed tag.
First, create a tag type of Consumed from the drop-down menu. Select the
Connection button to prompt the Consumed Tag Connection dialog box. On
the Connection tab, select the producer controller, provide the produced tag
name, and set the requested packet interval (RPI). The configuration for a
produced tag is similar, but no connection needs to be specified.
Fiber Optic Communication
IM 307/IM 317 Fiber Optic Interface Modules
These S5 modules are used to connect expansion racks to a central rack
containing a controller and allows for a transmission link between two nodes
of up to 1500 m.
In modern control architecture this arrangement would typically be
implemented by using Ethernet modules, such as the Logix 1756-ENBT, in
local and remote controller racks. These Ethernet modules would connect to
local network switches that would then interconnect with fiber optic links. One
advantage of connecting network switches via fiber optic rather than S5
modules is that the same fiber optic link can simultaneously interconnect
business computers and servers. A fiber optic link allows for more extensive
use, as it is not exclusively reserved for controller use.
Alternatively, Logix 1756-EN2F Ethernet modules can connect local and
remote racks. This module uses a fiber optic link that can be used to connect
racks up to 2 km apart.