CARLO GAVAZZI EM 21, Communication Protocol Manual

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Energy management
EM24-DIN Communication Protocol
10
2.7.5 Pulse output configuration menu
MODBUS
: read read and write mode
Modicom
address Physical
address
Length
(words)
VARIABLE
ENG. UNIT
Data
Format
Notes
3 04104 1007h 1 Kwh per pulse UINT 16 Value min = 1 (0,01Kwh)
Value max = 999 (9,99KWh)
2.7.6 Serial port configuration menu
MODBUS : read and write mode Table 2.7-5
Modicom
address Physical
address
Length
(words)
VARIABLE
ENG. UNIT
Data
Format
Notes
3 04105 1008h 1 RS485 instrument address UINT 16 Value min = 1
Value max = 247
Note: The number of stop bits is fixed to “1” and the parity control is fixed to “none”.
2.7.7 Reset commands
MODBUS : write only mode Table 2.7-12
Modicom
address Physical
address
Length
(words)
VARIABLE
ENG. UNIT
Data
Format
Notes
3 12289
3000h 1 Reset of all meters
(KwhTOT and KvarhTOT) UINT 16 Value=1: Command is executed
All other values produce no
effects
2.7.8 Note
A default value is not automatically assignes to the parameters when an out-of-range or invalid value is
written.
If an invalid value is assigned to any parameter, the unit could not work properly.
3 REVISIONS
This is the first release of the EM21 communication protocol