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Siemens Building Technologies Basic Documentation LMV5... CC1P7550en
HVAC Products 7 Display and operating unit AZL5... 13.08.2004
7.2 Ports of the AZL5…
The AZL5… has 3 ports:
• Port for the basic unit: CAN bus including power supply for the AZL5…
(Sub-D connector on the underside of the AZL5…)
• Port for the PC / laptop: RS-232
(Sub-D jack under the cover of the AZL5… front)
• Port for BACS
including power supply for the external e-bus interface (RJ45 jack on the underside of
the AZL5…)
External
interface
(incl. galvanic separation)
7550b09e/0804
BACS
AZL
µC
Modbus /
eBus
PC
Changeover via
AZL menu
Max. 3 m
eBus: Max. 100 m
Modbus: Depending on transmission
path (interface line and
environmental conditions)
COM2 COM1
The AZL5… menu («Operation» → «Select operating mode») offers the following choices:
− Interface PC
− Gateway BACS on
− Gateway BACS off
The CAN bus connection to the basic unit can simultaneously be combined with only
one of the 2 ports, either «Interface PC» or «Gateway BACS».
Note
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