CARLO GAVAZZI EM 21, Communication Protocol Manual

Page: 9 / 10

Energy management
EM24-DIN Communication Protocol
9
2.6 Carlo Gavazzi Controls identification code
MODBUS : read only mode with functions code 03 and 04 limited to a word at a time Table 2.6-1
Modicom
address Physical
address
Length
(words)
VARIABLE
ENG. UNIT
Data
Format
Notes
3 00012
000Bh 1 Carlo Gavazzi Controls
identification code UINT 16 Value=57: EM21 AV5 input model
Value=58: EM21 AV6 input model
.
2.7 Programming parameter tables
2.7.1 Password configuration menu
MODBUS : read and write mode Table 2.7-1
Modicom
address Physical
address
Length
(words)
VARIABLE
ENG. UNIT
Data
Format
Notes
3 04097
1000h 1 PASSWORD UINT 16 Minimum valid value: 0d
Maximum valid value: 999d
2.7.2 “Application” menu
MODBUS : read and write mode Table 2.7-2
Modicom
address Physical
address
Length
(words)
VARIABLE
ENG. UNIT
Data
Format
Notes
3 04098 1001h 1 Type of application UINT 16 Value=0: “A” application
Value=1: “B” application
Value=2: “C” application
2.7.3 System configuration menu
MODBUS : read and write mode Table 2.7-3
Modicom
address Physical
address
Length
(words)
VARIABLE
ENG. UNIT
Data
Format
Notes
3 04099
1002h 1 Measuring system UINT 16 Value=0: “3Pn”
Value=1: “3P1”
Value=2: “2P”
Value=3: “1P”
Value=4: “3P”
2.7.4 PT and CT configuration menu
MODBUS : read and write mode Table 2.7-4
Modicom
address Physical
address
Length
(words)
VARIABLE
ENG. UNIT
Data
Format
Notes
3 04100 1003h 2 Current transformer ratio UINT 32 Value min = 10 (CT=1,0)
Value max = 600000 (CT=60000.0)
3 04102 1005h 2 Voltage transformer ratio UINT 32 Value min = 10 (VT=1,0)
Value max = 60000 (VT=6000.0)