Herholdt Controls ECS, M1PRO, M3PRO MODBUS registers: read online

Connect Herholdt Controls to the computer through a USB-to-serial or RS485 adapter and read its registers in your browser: click "Read register values online" under the model (Chrome or Edge, nothing to install). The tables below list the MODBUS offset, unit, data type and scale of every register shown. For logging 24/7 into a database, CSV files or Excel, use the Advanced Serial Data Logger (for MODBUS RTU) or Advanced TCP/IP Data Logger (for MODBUS TCP): they poll the complete map of every model on this page and provide continuous Herholdt Controls data logger and record.

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Herholdt Controls (ECS) - MODBUS Measurements

Connection and addressing notes

Protocol: Modbus
Register addressing: 4-digit register numbers starting at 4099
Speed register: 4112
Parity register: 4113
Stop bits register: 4114
Address register: 4115, Modbus address
Value format register: 4117
Unsupported registers: read as 0 when the counter and interface combination (Basic or Full) does not support them

Registers in the map: 69 (the first 50 are listed below; the browser reader and the data loggers use the complete map). function 3 (holding registers). byte order big-endian. data types: dword, int64, word.

MODBUS offset	Description	Units	Data type	Scale
4099	Device type		word
4100	Firmware version		word
4101	Range overflow alarm		word
4102	Running tariff		dword
4104	PID bytes 1 and 2		word
4105	PID bytes 3 and 4		word
4106	PID bytes 5 and 6		word
4107	PID bytes 7 and 8		word
4108	PID bytes 9 and 10		word
4109	PID bytes 11 and 12		word
4110	PID bytes 13 and 14		word
4119	Active energy 1st phase T1, imp	kWh	int64	formula
4123	Active energy 2nd phase T1, imp	kWh	int64	formula
4127	Active energy 3rd phase T1, imp	kWh	int64	formula
4131	Active energy sum T1, imp	kWh	int64	formula
4135	Active energy 1st phase T2, imp	kWh	int64	formula
4139	Active energy 2nd phase T2, imp	kWh	int64	formula
4143	Active energy 3rd phase T2, imp	kWh	int64	formula
4147	Active energy sum T2, imp	kWh	int64	formula
4151	Active power 1st phase		dword
4153	Active power 2nd phase		dword
4155	Active power 3rd phase		dword
4157	Active power sum		int64	formula
4161	Active energy 1st phase T1, exp	kWh	int64	formula
4165	Active energy 2nd phase T1, exp	kWh	int64	formula
4169	Active energy 3rd phase T1, exp	kWh	int64	formula
4173	Active energy sum T1, exp	kWh	int64	formula
4177	Active energy 1st phase T2, exp	kWh	int64	formula
4181	Active energy 2nd phase T2, exp	kWh	int64	formula
4185	Active energy 3rd phase T2, exp	kWh	int64	formula
4189	Active energy sum T2, exp	kWh	int64	formula
4193	Reactive energy 1st phase T1, imp	kvarh	int64	formula
4197	Reactive energy 2nd phase T1, imp	kvarh	int64	formula
4201	Reactive energy 3rd phase T1, imp	kvarh	int64	formula
4205	Reactive energy sum T1, imp	kvarh	int64	formula
4209	Reactive energy 1st phase T2, imp	kvarh	int64	formula
4213	Reactive energy 2nd phase T2, imp	kvarh	int64	formula
4217	Reactive energy 3rd phase T2, imp	kvarh	int64	formula
4221	Reactive energy sum T2, imp	kvarh	int64	formula
4225	Reactive energy 1st phase T1, exp	kvarh	int64	formula
4229	Reactive energy 2nd phase T1, exp	kvarh	int64	formula
4233	Reactive energy 3rd phase T1, exp	kvarh	int64	formula
4237	Reactive energy sum T1, exp	kvarh	int64	formula
4241	Reactive energy 1st phase T2, exp	kvarh	int64	formula
4245	Reactive energy 2nd phase T2, exp	kvarh	int64	formula
4249	Reactive energy 3rd phase T2, exp	kvarh	int64	formula
4253	Reactive energy sum T2, exp	kvarh	int64	formula
4257	Reactive power 1st phase	kvar	dword
4259	Reactive power 2nd phase	kvar	dword
4261	Reactive power 3rd phase	kvar	dword

This is not the complete map: 50 of 69 registers are listed above. Click "Read register values online" to read any register of your device in the browser, or download the program to log the complete map.

Herholdt Controls (M1PRO,M3PRO) - MODBUS Maps

Connection and addressing notes

Protocol: Modbus, inbuilt
Register addressing: register numbers starting at 4100
Baud rate register: 4112
Parity register: 4113
Stop bits register: 4114
Address register: 4115, Modbus address
Value format register: 4117, float or integer format, selectable big or little endian
Data format: 32-bit values use 2 registers, 64-bit values use 4 registers scaled by 10000

Registers in the map: 83 (the first 50 are listed below; the browser reader and the data loggers use the complete map). function 3 (holding registers). byte order big-endian. data types: dword, int64, word.

MODBUS offset	Description	Units	Data type
4100	Firmware version		word
4101	Range overflow alarm		word
4102	Running tariff		word
4103	Read-only not used register		word
4104	PID, product identification bytes 1 and 2		word
4105	PID bytes 3 and 4		word
4106	PID bytes 5 and 6		word
4107	PID bytes 7 and 8		word
4108	PID bytes 9 and 10		word
4109	PID bytes 11 and 12		word
4110	PID bytes 13 and 14		word
4118	Reset energy counters command		word
4119	Active energy, L1, T1, imported	kWh	int64
4123	Active energy, L2, T1, imported	kWh	int64
4127	Active energy, L3, T1, imported	kWh	int64
4131	Active energy, sum, T1, imported	kWh	int64
4135	Active energy, L1, T2, imported	kWh	int64
4139	Active energy, L2, T2, imported	kWh	int64
4143	Active energy, L3, T2, imported	kWh	int64
4147	Active energy, sum, T2, imported	kWh	int64
4151	Active power, L1	kW	dword
4153	Active power, L2	kW	dword
4155	Active power, L3	kW	dword
4157	Active power, sum	kW	int64
4161	Active energy, L1, T1, exported	kWh	int64
4165	Active energy, L2, T1, exported	kWh	int64
4169	Active energy, L3, T1, exported	kWh	int64
4173	Active energy, sum, T1, exported	kWh	int64
4177	Active energy, L1, T2, exported	kWh	int64
4181	Active energy, L2, T2, exported	kWh	int64
4185	Active energy, L3, T2, exported	kWh	int64
4189	Active energy, sum, T2, exported	kWh	int64
4193	Reactive energy, L1, T1, imported	kvarh	int64
4197	Reactive energy, L2, T1, imported	kvarh	int64
4201	Reactive energy, L3, T1, imported	kvarh	int64
4205	Reactive energy, sum, T1, imported	kvarh	int64
4209	Reactive energy, L1, T2, imported	kvarh	int64
4213	Reactive energy, L2, T2, imported	kvarh	int64
4217	Reactive energy, L3, T2, imported	kvarh	int64
4221	Reactive energy, sum, T2, imported	kvarh	int64
4225	Reactive energy, L1, T1, exported	kvarh	int64
4229	Reactive energy, L2, T1, exported	kvarh	int64
4233	Reactive energy, L3, T1, exported	kvarh	int64
4237	Reactive energy, sum, T1, exported	kvarh	word
4241	Reactive energy, L1, T2, exported	kvarh	int64
4245	Reactive energy, L2, T2, exported	kvarh	int64
4249	Reactive energy, L3, T2, exported	kvarh	int64
4253	Reactive energy, sum, T2, exported	kvarh	int64
4257	Reactive power, L1	kvar	dword
4259	Reactive power, L2	kvar	dword

This is not the complete map: 50 of 83 registers are listed above. Click "Read register values online" to read any register of your device in the browser, or download the program to log the complete map.

Related MODBUS registers maps

Note: Products and companies mentioned here are used only for definition and identification purposes and can be trademarks and/or registered trademarks of the respective companies.

Herholdt Controls ECS, M1PRO, M3PRO MODBUS registers: read online

Herholdt Controls (ECS) - MODBUS Measurements

Herholdt Controls (M1PRO,M3PRO) - MODBUS Maps

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