Rockwell Automation PLC-5 Fieldbus Solutions for Integrated Architecture User Manual - Manual (Page 48)

Publication 1757-UM006A-EN-P - May 2002
2-4 Integrating Fieldbus into Rockwell Automation Logix System
Configuration Tools
1788-CN2FF Linking Device
The ControlNet-to-Foundation Fieldbus H1 linking device
(1788-CN2FF) connects a ControlNet™ network with one or two
F
OUNDATION Fieldbus H1 (Fieldbus) networks. Each H1 network
consists of multiple Fieldbus devices. Each field device has one or
more function blocks. Each function block performs an elementary
control function such as analog input, analog output, discrete input, or
discrete output. The ControlNet network consists of controllers, such
as PLC® processors, HMIs, drives, I/O devices, and so on. The linking
device has two broad functions, supporting the following:
• closed-loop control
• configuration and monitoring
ControlBuilder
The ProcessLogix R400.0 Control Builder application supports integral
configuration of fieldbus function blocks with ProcessLogix function
blocks to incorporate fieldbus devices in a unified ProcessLogix
Control Strategy. This means ProcessLogix function blocks and
fieldbus function blocks can be easily interconnected, so control can
reside on the fieldbus link, in the Control Processor/Control Execution
Environment (CEE), or cascaded from CEE to the fieldbus device.
An integrated Fieldbus Library Manager lets users read the
manufacturer's Device Descriptions for fieldbus devices to be tied to
an H1 Link and create individual templates for each fieldbus device
including their function blocks. The fieldbus device templates will
reside in the Engineering Repository Database for ProcessLogix. Once
a fieldbus device template is created, the fieldbus device is easily
associated with the appropriate FIM H1 Link through the Project tab in
Control Builder. The following figure shows how icons are used to
readily identify FIM, H1 Links, and fieldbus devices in the Control
Builder Project tab.