10
6651-2211
Functional description
Internal Electronics
COM
COM
+VA
O
V
P
+VB
C
NO
NC
STATUS
POWER
LEDā€™s
O
V
P
O
C
P
RxD/TxD - P
RxD/TxD - N
SHIELD
PROFIBUS DP
CH 1
SFP
Fibre transceive
r
TX
RX
CH 2
SFP
Fibre transceive
r
TX
RX
Switches
OVP Over Voltage Protection
OCP Over Current Protection
Converter PROFIBUS DP ā€“ optical fibre
ODW-710-F2 is a fibre optic modem that converts between electrical PROFIBUS DP and
a fibre optical link.
Repeater ā€“ optical fibre links
ODW-710-F2 is a fibre optic repeater that repeats received data from one fibre link out
to the other link. This is useful e.g. for long distance communication, where electromag-
netic interference may occur or when isolation of the electrical network is needed. The
maximum optical fibre distance depends on selected fibre transceiver and fibre type.
Distances up to 80 km (50 miles) are available.
Data rate up to 12 Mbit/s
ODW-710-F2 converts PROFIBUS DP data using data rates from 9 600 bit/s up to
12 Mbit/s. Retiming of the PROFIBUS DP data ensures that the correct signal form is
transmitted from the ODW-710-F2 converter.
Automatic data rate detection
The PROFIBUS data rate is set automatically as soon as the ODW-710-F2 receives a
correct data frame, whether data is received from PROFIBUS DP or the fibre optic link.
The detected data rate remains until a number of consecutive faulty received frames have
been detected or no further frames are detected within the timeout period. The timeout
period is set by switches, with the default setting of 31 faulty frames or 5 seconds with-
out any received frames.