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Example: Reading out the voltage L1-N
The voltage L1-N is stored in the measured
value list under the address 200. The voltage
L1-N is stored in INT format.
The device address of the UMG96S is as-
sumed to be address = 01 here.
The „Query Message“ is then as follows:
Name Hex
Note
Device address 01
UMG96S, Address = 1
Function
03
„Read Holding Reg.“
Start add Hi
00
0200dec = 00C8hex
Start add Lo
C8
No. of val. Hi
00
2dec = 0002hex
No. of val. Lo
02
Error check
-
The „response“ of the UMG96S may then look
like this:
Name Hex
Note
Device address 01
UMG96S, Address = 1
Function
03
Byte counter
06
Data
00
00
hex = 00dec
Data
E6
E6
hex = 230dec
Error check (CRC)
-
The voltage L1-N read back from address 0200
is 230V.
MODBUS RTU
The data from the parameter and measured
value list can be accessed via the MODBUS
RTU protocol.
Transmission parameters
RTU mode with CRC check.
Functions realised
Read holding register, function 03
Preset multiple registers, function 16
The byte order is high byte before low byte.
Important!
Maximum 120 bytes only can be read
out into a block!
m
Содержание UMG 96S 24V
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