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Building Technologies Basic documentation: Communication via the KNX bus CE1P3127en
HVAC Products Basic communication settings 30.08.2007
Clock time op.: Auto The RM… controller does not receive or transmit the time
or date (The device has its own time and date).
Clock time op.: Slave The RM… controller receives the time and date from the
time master.
Clock time op.: Master The RM… controller transmits the time and date in a 10
minute cycle over the KNX bus, starting from the last
time-synchronization
Sends
time of day:
10:15
Receives:
10:15
Clock time operation:
Master
Clock time operation:
Slave
Clock time operation:
Slave
Clock time operation:
Autonomous
3127Z37en
Receives:
10:15
Has its own
time of day
Receives:
10:15
Time of day for
timer function
The time and date in the time master can be modified as follows:
• By the user, on the time master
• By the user, by remote adjustment of the time slave
A user-adjustment of the time or date can be synchronized by pressing the rotary
knob.
Only one
bus device at a time can be the time master in a network. In relation to
the date and time, the other bus devices must be set as time "slaves" or set to
"Autonom."
6.1.3 Setting a time slave remotely
The operating line "Rem set clock slave" can be used to configure a time slave so
that the time and date can be set by an operator. The new values are then
transmitted via the KNX bus to the time master.
Main menu > Commissioning > Communication > Basic settings
Remote time-slave setting for RM… controller
Default. Yes
Settings No/Yes
Settings
Example
Modifying the
time and date
Note
Clock time operation:
Slave with
"Rem set clock slave:" Yes
Basic settings
Device address: 1
Dec bus power supp: On
Clock time op: Slave
Rem set clock save: Yes
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