Start Transmission Mode Using Loop 2; Start/Stop Transmission Mode Using Parameterization Mode; Testing Of The Module; Pulse Inputs - Landis+Gyr ULTRAHEAT T450 Service Manual

Pulse inputs

7.4.3

Start transmission mode using LOOP 2

7.4.4

Start/stop transmission mode using parameterization mode

7.4.5

Testing of the module

8 Pulse inputs
8.1

Connection of pulse inputs

•
Start transmission mode using LOOP 2
•
Start transmission mode using parameterization mode
•
Start transmission mode via UltraAssist. Please have a detailed look at
the UltraAssist manual.
Proceed as follow to start the transmission mode:
•
Press button 2 repeatedly until the LCD displays
•
Press button 1 repeatedly until the LCD displays
•
Press button 2 long (more than 3 s).
The transmission mode is activated, and the LCD display changes to
.
The meter immediately starts sending the data telegram regularly.
Please find more detailed information on starting and stopping the
transmission mode by means of the parameterization mode in chapter
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The function in parameter setting mode of the meter forces
a radio transmission.
Please find more detailed information on the testing of the transmission
mode in chapter 4.13.
Note: Each further pressing of button 2 updates the send data of
the data telegram by transmission from the meter and sends a
radio telegram.
Note: It is recommended to use the pulse input set T45-PULSE-IN
for the connection.
The meter has 2 pulse inputs for cumulating volume pulses from external
devices, for example a domestic cold-water meter and / or hot water meter.
The pulse inputs can be read out via the 868 MHz radio module, the M-Bus
module or the optical interface.
The meter readings of the pulse inputs are also indicated on the LCD.
For the connection of pulse inputs, proceed as follows:
•
If necessary, open the housing cover by loosening the screw.
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