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14.3 Interface parameters
Baud rate (baud) Parity Data bits Stop bits
4800,9600,19200,
38400
even, odd, none 8 2 for parity none
otherwise 1
The maximum data length of a Modbus transmission is 256 bytes. This results in a user
data length of 253 bytes.
The number of data bits and stop bits is dened in the Modbus denition. Baud rates of
less than 4800baud are possible by denition, but not implemented at present. The inter-
face parameters can only be congured on the device (not via bus).
14.4 Device settings
The settings are read with the 0x04 command (read input registers) as shown in Table 1.
Writing is not possible at present.
Address Words Description Value Format
0xD002 2 Primary transformer measuring voltage 0 - 999999 V oat
0xD004 2 Secondary transformer measuring
voltage
0 - 999 V oat
0xD006 2 Primary transformer measuring current 0 - 999999 A oat
0xD008 2 Secondary transformer measuring
current
1 A / 5 A oat
0xD00A 2 Target CosPhi 1 -1.0 - +1.0 oat
0xD00C 2 oat
0xD00E 2 Target CosPhi for energy recovery
(xed setting)
-1.0 - +1.0 oat
0xD010 2 Target CosPhi for message "Compensa-
tion unit too small"
-1.0 - +1.0 oat
0xD012 2 Connected phase voltage measurement
0=L1N // 1=L2N
// 2=L3N // 4=L12
// 5=L23 // 6=L31
unsigned
long
0xD014 2 Connected phase current measurement 0=L1 // 1=L2 //
2=L3 // 3=-L1 //
4=-L2 // 5=-L3
unsigned
long
0xD016 2
0xD018 2
0xD01a 2
0xD01c 2
General
Data point description for the Modbus protocol