Festo CPX-CTEL4-M12-5POL Manual page 20

1. System overview, CTEL system
1
Fieldbus
(incoming)
2
Fieldbus
(continuing)
3
CTEL master
module
4
I-port connecting
cables
5
I-port input
module
6
I-port valve
terminal
7
Sensor
8
Cylinder
9
I-port input
module
Fig. 1/2: Mode of operation of the CTEL system
1-6
Each CTEL master module controls the data transfer to the
decentralised I-port I/O-modules in a CPX terminal.
In principle, several CTEL master modules can be placed in a
CPX terminal.
The number of CTEL master modules that can be placed in a
CPX terminal is limited by the available address space of the
CPX terminal of up to 64 bytes of inputs and 64 bytes of out-
puts.
1 2 3
A constant I/O data exchange takes place through the CTEL
master module between the CPX terminal and the devices
connected to the CTEL master module.
Festo P.BE-CPX-CTEL-EN en 1205NH
4
5
6
7
8
9