Front lit indicators for communication and status, Operation principle – NOVUS DigiGate Profibus User Manual
Page 6
DigiGate Profibus
NOVUS AUTOMATION
6/11
Front lit indicators for communication and status
Tx:
Signalizes that the device is sending data through the Modbus RTU network;
Rx:
Signalizes that the device is receiving data through the Modbus RTU network;
Status:
When permanently lit up, it informs that the device is connected to the Profibus network (normal
operation); when flashing rapidly, it means that there is no connection with the Profibus DP network; when
flashing slowly (once per second, approximately), it means that the device is in “Configuration mode”.
Fig. 6 – Front panel of the DigiGate Profibus
Operation principle
This product is designed for transmitting data between two networks with distinct communication protocols. It operates as
slave in a Profibus DP network and simultaneously as master in a Modbus RTU network. The data transfer between both
networks is performed through two tables: the reading table, responsible for making available the data read from the
Modbus network to the Profibus network, and the writing table, responsible for forwarding the data from the Profibus
network to the Modbus network. These tables are configured through the DigiConfig software.
Fig. 7 – Operation of the Profibus DP and Modbus RTU buses