User Manual

Index
1.1 Introduction ...........................................................................................................................................3
1.2 MODBUS functions ...............................................................................................................................3
1.2.1 Function 03h (Read Holding Registers)..............................................................................3
1.2.2 Function 04h (Read Input Registers) ..................................................................................4
1.2.3 Function 06h (Write Single Holding Register).....................................................................4
1.2.4 Function 08h (Diagnostic with sub-function code 00h) .......................................................5
1.2.5 Broadcast mode ..................................................................................................................5
1.3 Application notes...................................................................................................................................6
1.3.1 RS485 general considerations............................................................................................6
1.3.2 MODBUS timing..................................................................................................................6
2 TABLES.........................................................................................................................................7
2.1 Data format representation In Carlo Gavazzi instruments.....................................................................7
2.1.1 Geometric representation....................................................................................................7
2.2 Maximum and minimum electrical values in EM24-DIN ........................................................................7
2.3 Instantaneous variables and meters......................................................................................................8
2.4 Digital input status.................................................................................................................................8
2.5 Current tariff ..........................................................................................................................................9
2.6 Firmware version and revision code......................................................................................................9
2.7 Front selector status..............................................................................................................................9
2.8 Carlo Gavazzi Controls identification code............................................................................................9
2.9 Programming parameter tables...........................................................................................................10
2.9.1 Password configuration menu...........................................................................................10
2.9.2 “Application” menu ............................................................................................................10
2.9.3 System configuration menu...............................................................................................10
2.9.4 DMD integration time menu...............................................................................................10
2.9.5 Selector menu ...................................................................................................................11
2.9.6 Filter configuration menu...................................................................................................11
2.9.7 Serial port configuration menu ..........................................................................................11
2.9.8 Secondary address ...........................................................................................................11
2.9.9 User configuration menu ...................................................................................................12
2.9.10 Digital input configuration menu........................................................................................12
2.9.11 PT and CT configuration menu .........................................................................................13
2.9.12 Serial number ....................................................................................................................13
2.9.13 Reset commands ..............................................................................................................13
3 REVISIONS..................................................................................................................................13
3.1 Modifications from Version 1 Revision 0 .............................................................................................14
3.2 Modifications from Version 2 Revision 0 .............................................................................................14
3.3 Modifications from Version 3 Revision 0 .............................................................................................14
3.4 Modifications from Version 4 Revision 0 .............................................................................................14