CARLO GAVAZZI EM 21 Handbuch zum Kommunikationsprotokoll - Seite 10
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Energy management
2.7.5
Pulse output configuration menu
MODBUS: read read and write mode
Modicom
Physical
address
address
1007h
304104
2.7.6
Serial port configuration menu
MODBUS: read and write mode
Modicom
Physical
address
address
304105
1008h
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
Modicom
Physical
address
address
312289
3000h
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.
This is the first release of the EM21 communication protocol
EM24-DIN Communication Protocol
Length
VARIABLE
(words)
ENG. UNIT
1
Kwh per pulse
Length
VARIABLE
(words)
ENG. UNIT
1
RS485 instrument address
Length
VARIABLE
(words)
ENG. UNIT
1
Reset of all meters
(KwhTOT and KvarhTOT)
3 REVISIONS
Data
Format
UINT 16
Value min = 1 (0,01Kwh)
Value max = 999 (9,99KWh)
Data
Format
UINT 16
Value min = 1
Value max = 247
Data
Format
UINT 16
Value=1: Command is executed
All other values produce no
effects
Notes
Table 2.7-5
Notes
Table 2.7-12
Notes
10