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For putting the device into service again, the faulty circuit protector has to be removed and the supply voltage has
to be switched off and on again.
6.2 Physical Interface
The physical interface used is RS485. Protocol used is the Modbus RTU protocol. It is unsusceptible to EMC dis-
turbances and allows artless implementation of the bus communication.
6.3 Setting the Communication Parameters
The parameters for the communication to the Modbus server are realised by means of the switches on the device
side.
Figure 9: Potentiometers for the communication parameters
The address of the device is fixed in the bus structure by means of the potentiometers. The left rotary switch fixes
the power of ten, the right one fixes the power of one.
Figure 10: Potentiometers for the communication parameters
Bus address of the device in this example is 41.
The communication speed and the parity bit are fixed by means of the DIP switches on the right side. For the defi-
nition of the switch please see the imprinted table.
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