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Building Technologies
Bus operator unit RMZ792
CE1P3113en
HVAC Products
6 “Commissioning” menu
03.04.2006
6 “Commissioning”
menu
•
Prerequisite for trouble-free operation of the bus operator unit is correct assignment
of the device addresses of all bus users including the line couplers
•
The device addresses of all bus users and line couplers must accord with their
positions in the network topology (area.line.address). Wrong device addresses can
lead to unexpected responses and results when commissioning the bus operator unit
6.1 Device
address
Like all other bus users, the bus operator unit must have an unambiguous device ad-
dress. The device address can be set in 3 different ways. Depending on usage, one or
the other method is the more suited. The RMZ792 is supplied with the device address
set to 0.2.255 (area.line.address).
With device address 255, Synco™ devices do not send any process data. Device
addresses 253 and 254 are reserved for special devices.
6.1.1
Automatic address search
•
Automatic address search is recommended in situations where the bus operator unit
is subsequently fitted to an existing plant without having knowledge of the existing
address assignment
•
At the request of the operator, the bus operator unit looks for the subnetwork ad-
dress (SNA, consisting of area and line) in the superposed line coupler. If no sub-
network address is received, the last setting of area and line will be used
•
Now, starting at 252, the bus operator unit searches for a free device address within
the line. If the address is already used, a new automatic search attempt is made us-
ing an address whose value is reduced by 1. The search continues until a free de-
vice address is found. The device address is set to 255 if no free device address can
be found
6.1.2
Manual assignment of addresses
•
Manual assignment of addresses is recommended in situations where the bus op-
erator unit has a firm place in the network and the address from a network plan has
already been defined and is known
•
Area
,
Line
and
Device address
are manually predefined by the operator
•
If the area or the line is changed, the bus operator unit looks for the subnetwork
address (SNA, consisting of area and line) in the superposed line coupler. When the
line coupler delivers an SNA, the device adopts the line coupler’s SNA and over-
writes any deviating manual settings. If no SNA is received, the set value of
Area
or
Line
will be adopted
•
If the required device address is already used by some other device, the setting
value will be reset to the previous value
6.1.3
Address assignment with the ETS
•
This programming mode is used when addresses in the Konnex network are as-
signed with the ETS
•
Area, line and device address are predefined in the ETS
•
Set the
Programming mode
on the bus operator unit to
On
•
Use the ETS to load the respective device address
•
After the bus operator unit has received the address, the
Programming mode
will
automatically change to
Off
Important!
