Samson 5476 - Manual (Page 70)

Modem time-out (t
0
)
When the controller connects to the GLT but without addressing a Modbus data point, the con-
nection is closed after the time specified for
Modem time-out has elapsed. If the error status reg-
ister has not been read during the GLT connection, the controller dials up to the GLT again after
the
Dialing pause to the control station (PA) has elapsed.
Number of redialing attempts (An)
The controller tries to dial up to the control system again, observing the
Dialing pause to the
control station, in case the GLT is busy or the function that triggered the call has not been reset
by the controller. After the specified number of redialing attempts have failed, the controller di-
als the alternative recipient.
Phone number of control station/alternative recipient
Enter the phone number of the control system modem/alternative recipient including the dialing
code, if necessary. Short pauses between the numbers can be entered using P (= 1 second); the
end of the string is to be marked by “–“. The phone number may include a maximum of
23 characters.
Example: “069, 2 sec. pause, 4009, 1 sec. pause, 0“: 0 6 9 P P 4 0 0 9 P 0 – (= 11 characters)
9.4 Meter bus interface
The TROVIS 5476 Heating and District Heating Controller can communicate with up to 3 heat
and water meters according to EN 1434-3. A flow rate or capacity limitation is possible on the
basis of the values measured at heat meter WMZ1.
Details on the use of the different heat or water meters can be found in the technical documenta-
tion TV-SK 6311.
70
EB 5476 EN
Communication
Fig. 8 · View from the back of the controller
Note!
Locate red jumper to the left with the meter bus
operation using the supply voltage