Westermo ODW-610-F1 - Manual (Page 7)

7 6651-22601
Functional description
Internal Electronics
COM
COM
+VA
O
V
P +VB
C
NO
NC
STATUS
POWER
LED’s
O
V
P
O
C
P
RxD/TxD - P
RxD/TxD - N
SHIELD
PROFIBUS DP
CH 1
SFP
Fibre transceiver
TX
RX
Switches
OVP Over Voltage Protection
OCP Over Current Protection
Converter PROFIBUS DP – optical fibre
ODW-610-F1 is a fibre optic modem that converts between electrical PROFIBUS DP and
fibre optical link.
Data rate up to 12 Mbit/s
ODW-610-F1 converts PROFIBUS DP data in data rate from 9600 bit/s up to 12 Mbit/s.
Retiming of the PROFIBUS DP data ensures that the correct signal format is transmitted
from the ODW-610-F1 converter.
Automatic data rate detection
The PROFIBUS data rate is set automatically as soon as ODW-610-F1 has identified a
correct data frame, independently of whether data is received from PROFIBUS DP or
the fibre optical link. Detected data rate remains until a number of consecutive faulty
received frames or after a delay without any received frame. This is set by switches, with
default setting of one faulty frame or 65 535 t
Bit
.
Point to point communication via fibre optical network
The electrical PROFIBUS DP network is transferred via a fibre optical network by the
use of two ODW-610-F1 units. This application is useful e.g. for long distance communi-
cation, where electromagnetic interferences may occur or when isolation of the electrical
network is needed.
The maximum optical fibre distance depends on selected fibre transceiver and fibre type.
POWER CH 1
COM +VA +VB COM
POWER CH 1
COM +VA +VB COM TX RX TX RX
Fibre optical connection
at point to point communication