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Instruction for use | Supercal 739
11. Communication interfaces and options
The communication interfaces are installed and preset in the factory. When ordering, you must
specify the interface type: remote powered M-Bus or Radio SONTEX, Wireless M-Bus (OMS),
LoRaWAN, or pulse outputs.
Pulse input function
The Supercal 739 offers the possibility of integrating up to two further pulse input from other
meters, for instance a hot water and a cold water meter.
The value of the pulse factor is programmable via the Prog7x9 software. By default, the pulse
factor will be 1 Pulse/Unit for each pulse input.
The meter data are aggregated separately in totalizers and can be shown on the display as IN1
and IN2; they can also be transferred via the communication interface which is installed in the
calculator. The Supercal 739 is delivered with a cable length of 1.5 m for the input pulse signals.
Pulse output function
If ordered the Supercal 739 offers the possibility of integrating two open collectors pulse
outputs which can represent hot energy, cold energy or volume.
Energy Meter – heating or cooling application:
-
Output S1 = Heating or cooling energy
-
Output S2 = Volume
Mixed application heating and cooling:
-
Output S1 = Heating energy
-
Output S2 = Cooling energy
Whenever the smallest energy unit (hot or/and cold) or volume displayed on the screen is
incremented, 1 pulse will be transmitted on the corresponding output cable S1/S2.
Example for energy:
Display 12345678 kWh
==> output pulse value for energy = 1 kWh / pulse
Display 12345,678 MWh ==> output pulse value for energy = 0.001 MWh / pulse
Display 123456,78 GJ
==> output pulse value for energy = 0.01 GJ / pulse
Example for volume:
Display 12345,678 m3
==> output pulse value for volume = 0.001 m3 / pulse
Display 123456,78 m3
==> output pulse value for volume = 0.01 m3 / pulse
The Supercal 739 is supplied with a cable length of 1.5 m for pulse outputs.
Electrical characteristics of the pulse outputs: open collector 1 Hz 500 ms.
Optical interface
The optical interface is available on every Supercal 739.
Communication between the Prog7x9 software and Supercal 739 can be done by means of an
optical coupler.
The Prog7x9 software is mainly used to configure the non-metrological parameters and for
readout.
The transmission speed is set at 2400 bauds and cannot be changed.
We recommend the use of optical couplers supplied by: www.petechnik.de
For the optical probe listed below, we have noted the filters needed to permit correct
communication with Prog7x9 software:
Optical probe
Filter
P+E Technik : "K1-98" or "K1-06"
No filter
P+E Technik : "K01-USB"
No filter
