Reactive Power Controller Operating instructions

Reactive Power ControllerSerial interface (Option)Device addressIf several devices areconnected via RS485,a master (PC/PLC) cantell the difference betweenthem by their deviceaddresses. Within one network, each Prophi musthave its own device address.If Profibus protocol has been chosen, the address can begiven between 0 and 126. If Modbus protocol has beenchosen, the address can be given between 0 and 255.The device address can be requested and changed inmenu "advanced programming".Example: Change device address.With key 3 you canmove to device addressin expanded programming.Confirm selection withkey 1.In this example the device address is indicated as 1.Select the number to be changed by using key 2.The selected digit is flashing.Change digit with key 3.Confirming key 1 for about 2 seconds, the changes aresaved and Prophi keeps working in automatic mode.Transmission protocolFor the connection ofProphi to an existingfield bus system are twotransmission protocolsavailable:0 - Modbus RTU (Slave) and1 - Profibus DP V0 (Slave) .With Modbus protocol you have access to the data fromtable 1 and with Profibus protocol you have access to thedata of table 2.Example: Select transmission protocol.Please move to deviceaddress in expandedprogramming using key3. Now press key 2 fortransmission protocol.Confirm selection with key 1.In this example the transmission protocol is protocol1=Profibus DP. Digit 1 is flashing.Please change over between protocol 1 and 2 by pressingkey 3.Confirming key 1 for about 2 seconds, the changes aresaved and Prophi keeps working in automatic mode.Attention!If a switching frequency of 50Hz is programmedfor the transistor outputs, the serial interface doesnot work!Page 44= Key 1 = Key 2 = Key 3