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Janitza UMG511 Modbus register map

  • Official
  • 61 registers
  • Revision 3 · 2026-11-10

Official: Written from the manufacturer's documentation, but not tested on a device yet. Check the map against the manufacturer's documentation before you write to a live device. Tested it? Report a test.

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Communication

Protocol
Modbus TCP and RTUdefault
Unit ID
1default
TCP port
502default
Serial
9600 8E1 · 9600 baud, 8 data bits, even parity, 1 stop bit defaults
Byte / word order
ABCD · bytes big-endian, words high first
Addresses
0-based

Connection values are defaults: the device may be configured differently.

Map

Registers
61 holding registers
Revision
3 · 2026-11-10
Added
()
File
maps/janitza/umg511.mbmap.json · 9 KB · history
SHA-256
5145a304f80e7c2876208db8188c019b497c81650c10b4aba20ddee7b4a4be1e
Manufacturer
janitza.com

Sources and notes

Source: Janitza electronics, "UMG 511 Modbus-address and Formulary", 05/2021, Doc. no. 1.037.021.9.g

  • Addresses are the protocol addresses of the address list; values are big-endian. The device also serves them little-endian at the same address + 32768.
  • Not in this map: the rest of the address list (200 ms values, mean, minimum and maximum values, Fourier analysis, configuration); this map covers the frequently required readings block.
  • Readings in float format already include the transformer ratios.
AreaAddressNameTypeAccessUnitScaleDescription
HR 19000 float32 ABCD R V
HR 19002 float32 ABCD R V
HR 19004 float32 ABCD R V
HR 19006 float32 ABCD R V
HR 19008 float32 ABCD R V
HR 19010 float32 ABCD R V
HR 19012 float32 ABCD R A
HR 19014 float32 ABCD R A
HR 19016 float32 ABCD R A
HR 19018 float32 ABCD R A
HR 19020 float32 ABCD R W
HR 19022 float32 ABCD R W
HR 19024 float32 ABCD R W
HR 19026 float32 ABCD R W
HR 19028 float32 ABCD R VA
HR 19030 float32 ABCD R VA
HR 19032 float32 ABCD R VA
HR 19034 float32 ABCD R VA
HR 19036 float32 ABCD R var
HR 19038 float32 ABCD R var
HR 19040 float32 ABCD R var
HR 19042 float32 ABCD R var
HR 19044 float32 ABCD R
HR 19046 float32 ABCD R
HR 19048 float32 ABCD R
HR 19050 float32 ABCD R Hz
HR 19052 float32 ABCD R
HR 19054 float32 ABCD R Wh
HR 19056 float32 ABCD R Wh
HR 19058 float32 ABCD R Wh
HR 19060 float32 ABCD R Wh
HR 19062 float32 ABCD R Wh
HR 19064 float32 ABCD R Wh
HR 19066 float32 ABCD R Wh
HR 19068 float32 ABCD R Wh
HR 19070 float32 ABCD R Wh
HR 19072 float32 ABCD R Wh
HR 19074 float32 ABCD R Wh
HR 19076 float32 ABCD R Wh
HR 19078 float32 ABCD R VAh
HR 19080 float32 ABCD R VAh
HR 19082 float32 ABCD R VAh
HR 19084 float32 ABCD R VAh
HR 19086 float32 ABCD R varh
HR 19088 float32 ABCD R varh
HR 19090 float32 ABCD R varh
HR 19092 float32 ABCD R varh
HR 19094 float32 ABCD R varh
HR 19096 float32 ABCD R varh
HR 19098 float32 ABCD R varh
HR 19100 float32 ABCD R varh
HR 19102 float32 ABCD R varh
HR 19104 float32 ABCD R varh
HR 19106 float32 ABCD R varh
HR 19108 float32 ABCD R varh
HR 19110 float32 ABCD R %
HR 19112 float32 ABCD R %
HR 19114 float32 ABCD R %
HR 19116 float32 ABCD R %
HR 19118 float32 ABCD R %
HR 19120 float32 ABCD R %

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