HBM AED9101D, Руководство по эксплуатации, Страница: 23 / 36

AED9101D
I3563-1.0 en 23
you can connect several AEDs to
one
interface on the
PC (bus mode, see
Section6.4).
For
4‐wire
connection, slide DIP switches S1 to S6 to the
left. For
2‐wire
connection, slide S1 to S4 and S6 to the
left, S5 to the right. The switch position for bus termina-
tion (termination) is geared to the position of the AED in
the bus system, see
Section 6.4, page 23
.
RS‐232
8...30 V
2/4-wire
RS‐485
TxD
RxD
GND
RxD
TxD
GND
Interface converter
RS‐232 - RS‐485
PC COM port
D-Sub plug, 9-pin
(PC)
PIN
2 = RxD
3 = TxD
5 = GND
U
v
: 10

30V
DC
RS‐485 bus
TA
TB
RA
RB
GND
Uv TA (blue)
TB (black)
RA (green)
RB (gray)
GND
U
v
(red, 10 ... 30V
DC
)
(white)
Equivalent designations:
TA = T-
RA = R-
TB = T+
RB = R+
D-Sub socket, 9-pin
(converter)
PIN
2 = TxD
3 = RxD
5 = GND
AED
Fig. 6.9 Connecting an AED (RS­422 or RS­4854­wire) to a
PC via the HBM interface converter; also see
Fig. 6.6 on page 19
6.4 Using several AEDs (bus mode
with RS‐485)
Up to 89 AEDs can be connected via the
RS‐485
inter-
face to a common bus line, the total length of which can