www.helmholz.com
Version
3
en
Brief instruction
Brief instruction FLEXtra® FO 650
Application and functional description
The FLEXtra® FO is primarily a normal PROFIBUS
repeater with the capability of expansion by 2 (with
FO-2) or 5 (with FO-5) additional optical MPI/PROFIBUS
segments.
It translates an electrical MPI/PROFBUS interface into an
optical MPI/PROFIBUS interface and vice-versa.
It regenerates the edge steepness, level and duty cycle
of signals. In addition it brings the advantages of
optical signal transfer to the MPI/PROFIBUS network.
The Flextra FO are available in 3 different variants:
(Suitable for POF resp. PCF
2)
)
FLEXtra® FO 650-2:
Connector type BFOC
1)
resp. ST, 650 nm
700-996-2AA01
Connector type SMA, 650 nm
700-996-2BA01
Connector type Versatile Link
3)
resp. HP, 650 nm 700-996-2CA01
FLEXtra® FO 650-5:
Connector type BFOC
1)
resp. ST, 650 nm
700-996-5AA01
Connector type SMA, 650 nm
700-996-5BA01
Connector type Versatile Link
3)
resp. HP, 650 nm
700-996-5CA01
1.
The FLEXtra® FO is suitable for mounting on a DIN
rail. It is engaged as shown in the picture.
2.
A DIP switch is installed for deactivating the repeat
function on the individual ports.
Furthermore, the DIP switch DIP 4 (FO-2) or DIP 7
(FO-5), can be used as the ON / OFF switch for all
segments.
With optical ports, switching off a port does not mean
that the send diode (Tx) is switched off, rather that the
port can no longer receive data at the Rx input. Hence
the repeater function of the port is deactivated.
Brief instruction FLEXtra® FO 650
3.
If port X1 of the FLEXtra® FO is at the start or end of
a segment then termination on the POFIBUS connector
must be switched on (ON).
If port X1 of the FLEXtra® FO is in the middle of a
segment then termination on the PROFIBUS connector
must be switched off (OFF).
The PROFIBUS is connected to the FLEXtra® FO via the
SUB-D female connector. Connection of the optical seg-
ment is, dependent on type, via BFOC
1)
resp. ST, SMA
or Versatile Link
3)
resp. HP connectors.
Termination is not required for the optical ports.
ON
OFF
4.
Connect the optical fi bre cables to ports X2 – X5 of
the device. The following fi bres can be used:
•
Polymeric Optical Fibre (POF):
•
980/1000 μm
•
Wavelength: 650 mm
• Loss approx 160 db/km
•
Polymer Cladded Fibre (PCF
2)
resp. HCS):
•
200/230 μm
•
Wavelength: 650 mm
• Loss approx 10 db/km
Note:
For the assembly are separate connectors, and
special assembly tools according to the required plug
connection technology required.
The information on installation to a POF type please refer
the steps A to C (see reverse side).
You may obtain the necessary fi ber cable completely pre-
assembled from your FO supplier.
Connect the optical ports via a CROSS-OVER connec-
tion i.e. TxD fi bre of the other end to the RxD connector
of the FLEXtra® FO.
Connect RxD fi bre of the other end to the TxD connec-
tor of the FLEXtra® FO.
Opt
opus
650
PLC
subnetwork 1 up to 32 stations
subnetwork 2 up to 32 stations
PROFIBUS slave
PROFIBUS slave
“R” ON
“R” OFF
“R” ON
“R” ON
“R” OFF
“R” ON
PC
Note:
PROFIBUS connectors are not included. See also: www.profi busstecker.de
Connector plugs for the optical connection are not included. These are available from your FO supplier.