42 List of Figures
WAGO I/O System 750
750-940 EnOcean RS-485 Gateway; 868 MHz
Manual
Version 1.3.0, valid from FW/HW Version 01/01
mounting surface is non-conductive to avoid negatively influencing the
antenna performance.
10. Attach the mounted cable to the strain relief.
11. Set the enclosure cover with the printed circuit board onto the enclosure
bottom of the EnOcean Gateway and close it by turning gently to the left.
DIN-rail mounting is also possible when the Gateway is closed
As an alternative, the EnOcean Gateway can be completely prepared before
mounting and then mounted to a DIN-rail when closed.
5.3
Connection of the EnOcean Gateway in Modbus
Mode
The EnOcean Gateway is connected via RS-485 cable to the Modbus master
and Modbus slave. The connecting cable provides the communication signals
and a shield potential.
A functional ground is provided via the connection cable shield. Discharge is
through the previous module in the chain.
The EnOcean Gateway power supply is provided through either a Modbus
master or an external power supply source. When a Modbus slave is connected,
the EnOcean Gateway forwards the supply power to it.
Pay attention to the connection of the “com” connection
When the RS-485 interface of the higher-level controller is galvanically isolated
from the power supply of the EnOcean Gateway, it is imperative that the “com”
connection of the EnOcean Gateway is connected with GND.
Otherwise, the “com” connection must not be connected.
