Festo Checkbox Compact CHB-C-C, Manual

Page: 64 / 138

4. I/O module extensions of the Checkbox PLC
4-4
Festo P.BE-CB-COMP-EN en 0211a
4.2 ENCODER
When higher demands are placed on the accuracy of the
length of the test part, you can connect a rotary-pulse gener-
ator to the connection marked ENCODER for ascertaining the
speed of the conveyor system (see chapter A.6 Accessories).
Operating system version ...E (operating system with encoder
evaluation) must be used for evaluating the encoder signals.
Check therefore the operating system version when you
switch on your Checkbox PLC (see chapter 2.4, Commission-
ing: switching on). Operating system ...E can be found in In-
ternet under the address www.festo.com (Business Area
Pneumatic, Checkbox). For modifications to the operating
system, please refer to your Festo Service.
Pin ENCODER connector socket
Interface for rotary pulse generator as per RS485 specifica-
tion
1 A+
2 n.c.
3 B+
2
4 A-
2
4
5
5 B-
1 3
8
6 5 V supply
1)
6 7
7 GND
8 n.c.
1)
Maximum loading capacity 180 mA
Note the following when connecting a rotary pulse generator:
– Do not make any connection between the potentials of
the ENCODER connection and other potentials.