ModbusAttr - Versionsgeschichte

Krueuw: /* Configuration of the module as master or passive listener */

2025-02-16T15:48:21Z

Configuration of the module as master or passive listener

← Nächstältere Version		Version vom 16. Februar 2025, 17:48 Uhr
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	[[Weiteres Beispiel - SMA Wechselrichter\|Another example - SMA inverter]]		[[Weiteres Beispiel - SMA Wechselrichter\|Another example - SMA inverter]]

			[[Step-by-step instructions for exemplary SMA example]]

	Attributes to define data objects start with obj- followed by a code that identifies the type and address		Attributes to define data objects start with obj- followed by a code that identifies the type and address
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	Without setting this attribute the module will start individual read requests for each object.		Without setting this attribute the module will start individual read requests for each object.
	Typically the documentation for the modbus interface of a given device states the maximum number of objects that can be read in one function code 3 request.		Typically the documentation for the modbus interface of a given device states the maximum number of objects that can be read in one function code 3 request.
	<code>dev-h-defUnpack n</code> means that the values in this example that the values are stored as unsigned short (16-bit) in "network" (big-endian) order. This is only one possibility of many. An integer value might be signed instead of unsigned or it might use different byte ordering (e.g. unpack codes v or s).		<code>dev-h-defUnpack n</code> means that the values in this example that the values are stored as unsigned short (16-bit) in "network" (big-endian) order. This is only one possibility of many. An integer value might be signed instead of unsigned or it might use different byte ordering (e.g. unpack codes v or s).

	== Handling Data Types ==		== Handling Data Types ==

Krueuw: /* Configuration of the module as master or passive listener */

2024-04-22T20:04:45Z

Configuration of the module as master or passive listener

← Nächstältere Version		Version vom 22. April 2024, 22:04 Uhr
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	</pre>		</pre>

	[[Weiteres Beispiel - SMA Wechselrichter]]		[[Weiteres Beispiel - SMA Wechselrichter\|Another example - SMA inverter]]

	Attributes to define data objects start with obj- followed by a code that identifies the type and address		Attributes to define data objects start with obj- followed by a code that identifies the type and address

Krueuw: SMA-Beispiel ergänzt als Link

2024-04-22T19:54:24Z

SMA-Beispiel ergänzt als Link

← Nächstältere Version		Version vom 22. April 2024, 21:54 Uhr
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	attr PWP webCmd Temp_Soll		attr PWP webCmd Temp_Soll
	</pre>		</pre>

			[[Weiteres Beispiel - SMA Wechselrichter]]

	Attributes to define data objects start with obj- followed by a code that identifies the type and address		Attributes to define data objects start with obj- followed by a code that identifies the type and address

Krueuw: /* Configuration of the module as master or passive listener */

2024-04-14T18:01:46Z

Configuration of the module as master or passive listener

← Nächstältere Version		Version vom 14. April 2024, 20:01 Uhr
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	Therefore it is typically necessary to specify the data representation as a Perl unpack code.		Therefore it is typically necessary to specify the data representation as a Perl unpack code.
	A Modbus master can also write values to Objects in the device and attributes define how this is done.		A Modbus master can also write values to Objects in the device and attributes define how this is done.

			{{Randnotiz \| RNTyp=y \| RNText=To set the following attributes, modify the examples and then add them to the FHEM command line at the top of the web interface. The usual procedure in the web interface is apparently only supported afterwards.}}

	Example for a Modbus master or passive configuration:		Example for a Modbus master or passive configuration:

StefanStrobel: /* Define as Modbus relay */

2020-05-23T14:56:35Z

Define as Modbus relay

← Nächstältere Version		Version vom 23. Mai 2020, 16:56 Uhr
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	define <name> ModbusAttr <Id> relay to <FhemMasterDevice>		define <name> ModbusAttr <Id> relay to <FhemMasterDevice>
	</pre>		</pre>
	or		for a relay from a serial line to a defined master or
	<pre>		<pre>
	define <name> ModbusAttr <Id> relay <Address:Port> <RTU\|ASCII\|TCP> to <FhemMasterDevice>		define <name> ModbusAttr <Id> relay <Address:Port> <RTU\|ASCII\|TCP> to <FhemMasterDevice>
	</pre>		</pre>
			For a relay that listens to modbus requests from a network connection.

	The module waits for connections from other Modbus masters. It will forward requests if they match the given Modbus <Id> to an already defined Modbus Master device inside Fhem which will send them to its defined slave, take the reply and ~~the~~ pass it back to the original Master.		The module waits for connections from other Modbus masters. It will forward requests if they match the given Modbus <Id> to an already defined Modbus Master device inside Fhem which will send them to its defined slave, take the reply and then pass it back to the original Master.
	With this mode a Fhem installation can for example be used in front of a device that only speaks Modbus RTU over RS485 to make it available via Modbus TCP over the local network.		With this mode a Fhem installation can for example be used in front of a device that only speaks Modbus RTU over RS485 to make it available via Modbus TCP over the local network.

	Examples:		Examples:

	<pre>		<pre>
	define MB-485 Modbus /dev/ttyUSB2		define MB-485 Modbus /dev/ttyUSB2
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	defines Heating as a Modbus Master to communicate with the Heating and its Modbus ID 22,		defines Heating as a Modbus Master to communicate with the Heating and its Modbus ID 22,
	and then defines the relay which listens to the local IP address 192.168.1.2, TCP port 1502, Modbus Id 33 and protocol Modbus-TCP.		and then defines the relay which listens to the local IP address 192.168.1.2, TCP port 1502, Modbus Id 33 and protocol Modbus-TCP.
	Requests coming in through Modbus TCP and port 1502 are then translated to Modbus RTU and forwarded via RS-485 to the heating system with Modbus Id 22.		Requests coming in through Modbus TCP and port 1502 are then translated to Modbus RTU and forwarded via RS-485 to the heating system with Modbus Id 22.

			Please note that the IP address specified in the relay definition is a local IP address of the relay itself and that the port number is 1502, not 502 because Fhem running on Linux can not easily open listening port numbers below 1024 unless it is running as root.

	or (unlikely)		Other (unlikely) Example:
	<pre>		<pre>
	define MB-232 Modbus /dev/ttyUSB2@19200		define MB-232 Modbus /dev/ttyUSB2@19200
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	defines Solar as a Modbus Master to communicate with Modbus TCP to a Solar power system at IP Adrress 192.168.1.122 and its Modbus ID 7,		defines Solar as a Modbus Master to communicate with Modbus TCP to a Solar power system at IP Adrress 192.168.1.122 and its Modbus ID 7,
	and then defines the PLC2NetRelay as a relay which listens to Modbus-ASCII requests over the serial RS-232 link from a PLC to Modbus ID 1.		and then defines the PLC2NetRelay as a relay which listens to Modbus-ASCII requests over the serial RS-232 link from a PLC to Modbus ID 1.
	Requests to Modbus Id 1 coming in through the serial link are then translated to Modbus TCP and forwarded over the network to the solar power system with Modbus Id 7.		Requests to Modbus Id 1 coming in through the serial link are then translated to Modbus TCP and forwarded over the network to the solar power system with Modbus Id 7.

	== Configuration of the module as master or passive listener ==		== Configuration of the module as master or passive listener ==

ZDX: /* All Attributes */

2020-01-05T15:07:53Z

All Attributes

← Nächstältere Version		Version vom 5. Januar 2020, 17:07 Uhr
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	:This can be used if the device delivers strings in an encoding like cp850 and after decoding it you want to reencode it to e.g. utf8.		:This can be used if the device delivers strings in an encoding like cp850 and after decoding it you want to reencode it to e.g. utf8.

	;obj-[cdih][1-9][0-9]*-~~showget~~		;obj-[cdih][1-9][0-9]*-showGet
	:every reading can also be requested by a get command. However these get commands are not automatically offered in fhemweb. By specifying this attribute, the get will be visible in fhemweb.		:every reading can also be requested by a get command. However these get commands are not automatically offered in fhemweb. By specifying this attribute, the get will be visible in fhemweb.

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	;disable		;disable
	:stop communication with the device while this attribute is set to 1. For Modbus over TCP this also closes the TCP connection.		:stop communication with the device while this attribute is set to 1. For Modbus over TCP this also closes the TCP connection.


	== Links ==		== Links ==

ZDX: /* Get-Commands */

2020-01-05T15:07:31Z

Get-Commands

← Nächstältere Version		Version vom 5. Januar 2020, 17:07 Uhr
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	Every reading can be manually requested by a Get.		Every reading can be manually requested by a Get.
	Internally a Get command triggers the corresponding Modbus request to the device and the module then interprets the data and sets the right Fhem readings. To avoid huge option lists in FHEMWEB, the objects visible as Get in FHEMWEB can be defined by setting an attribute <code>obj-xy-~~showget~~</code> to 1.		Internally a Get command triggers the corresponding Modbus request to the device and the module then interprets the data and sets the right Fhem readings. To avoid huge option lists in FHEMWEB, the objects visible as Get in FHEMWEB can be defined by setting an attribute <code>obj-xy-showGet</code> to 1.

	== All Attributes ==		== All Attributes ==

StefanStrobel: Für die neue Version des Moduls aktualisiert (mit Slave, Relay und passive listening Features)

2018-10-21T14:34:06Z

Für die neue Version des Moduls aktualisiert (mit Slave, Relay und passive listening Features)

Änderungen zeigen

StefanStrobel: zahlreiche Aktualisierungen

2017-01-29T10:55:25Z

zahlreiche Aktualisierungen

Änderungen zeigen

StefanStrobel: /* Prerequisites */ Link ergänzt

2015-03-26T19:01:49Z

Prerequisites: Link ergänzt

← Nächstältere Version		Version vom 26. März 2015, 21:01 Uhr
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	== Prerequisites ==		== Prerequisites ==
	This module uses the Modbus base module 98_Modbus.pm which uses the DevIO module		This module uses the [[Modbus\|Modbus base module 98_Modbus.pm]] which uses the DevIO module

	== Define for Modbus RTU over serial lines / RS485 bus ==		== Define for Modbus RTU over serial lines / RS485 bus ==