3.5 Wireless Interfaces

This subsection describes the wireless communication interfaces of 2N® MeterCom PRO including their main use, control and board location.

Wireless M–Bus Interface

Each of the 2N® MeterCom PRO  motherboards is equipped with a module providing wireless communication via the Wireless M-Bus protocol. You can define up to 64 meters for data collection. Having received a WM-bus message from a meter defined in the meter list, 2N® MeterCom PRO stores the message into the circular buffer in its internal memory. Use selective access to retrieve and delete such data. When the memory is full, the oldest data will be deleted automatically to give space to new records. You can define the minimum reading interval for each meter. No reading coming before the end of this timeout will be saved. You can switch the  2N® MeterCom PRO WM-bus module into the Client mode to send readings for subsequent processing either outside 2N® MeterCom PRO, or one 2N® MeterCom PRO module will read data from the other meters and transmit them to the appropriate data concentrator.

Tip

  • Remember to connect an external WM-Bus antenna to make your 2N® MeterCom PRO work properly. Refer to Subs. 2.3 - Mounting for installation details.

Caution

  • The WM-bus parameters may be different depending on the module mounted (radio frequency, e.g.).

External Wireless M-Bus Antenna Connection

Insert the Wireless M-Bus antenna connector in the SMB connector on the motherboard. Follow the GSM antenna installation instructions.

Wireless M-Bus Antenna Connection

Caution

  • Tighten the Wireless M-Bus antenna connector gently with your hand; never use a tool!

Note

  • The antenna is not part of the 2N® MeterCom PRO delivery.