Festo Контроллер позиционирования CPX-CMPX - Manual (Page 26)

1. Overview of components
1−8
Festo P.BE−CPX−SYS−EN en 0902e
CPX bus node
The node point of a CPX terminal with fieldbus connection is
the CPX bus node, which controls the following functions:
ć The connection of the terminal to the relevant field bus
ć The control of data transfer to/from the field bus module
of your control system
ć Read and write access (depending on the CPX bus node)
to system−relevant parameters and diagnostic data
(access to internal data and parameters)
ć Internal control of the terminal
CPX bus nodes provide the connection to certain fieldbuses,
pass control signals on to the other CPX modules and monitor
their ability to function. Basic settings for fieldbus communiĆ
cation can usually be made by DIL switch directly on the CPX
bus node.
Detailed information on the CPX bus node you are using can be
found in the manual for the relevant CPX bus node.
CPX Front End Controller (CPX−FEC)
The CPX Front End Controller can be used together with a CPX
bus node or independently of a CPX bus node. It offers the
following functions, for example:
ć Independent control of the CPX valve terminal (Stand
Alone)
ć Communication via Ethernet (e.g. web server, e−mail,
EasyIP)
ć Ethernet slave function (via Modbus TCP)
ć Communication via fieldbus (only in conjunction with the
appropriate CPX bus node)