BV 7055 (0509)
178
Connection to the end of HIBUS
Figure 3: Connection to the end of HIBUS
Table 3: Switch positions (8-position DIP switch)
For the bus termination on H 7505 a 5 V supply is essential from the unit connected to X3.
So the bus termination on the converter Edgeport/2i must be activated if it is connected to the
end of the bus.
No. Position Explanation
1
2
3
4
5
6
7
8
ON
ON
ON
OFF
ON
ON
OFF
OFF
Echo disabled
Half duplex
Bus termination activated
not used
not used
As the supply of the internal bus termination is made via the USB inter-
face, there exists no termination if the PC is removed or switched off.
So the connection of the converter to the end of a bus is only admissi-
ble if it is exclusively a programming bus.
X2X2 X1
S1 OFF
S2 OFF
S1 ON
S2 ON
H51q H41q
HIBUS 2
H 7506
Edgeport/2i
S1 OFF
S2 OFF
X3 X3 X3
X1 X
USB
BV 7055
BV 7046
H 7506H 7506
BV 7046
X1
PC
(PADT)
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