<![CDATA[LogicMachine Forum - Gateway]]> https://forum.logicmachine.net/ Sat, 04 Apr 2026 17:17:18 +0000 MyBB <![CDATA[Modbus TCP problem]]> https://forum.logicmachine.net/showthread.php?tid=6377 Wed, 01 Apr 2026 20:14:53 +0000 judgment]]> https://forum.logicmachine.net/showthread.php?tid=6377 Tried firmware upgrade - same issue. 
any ideas?Smile

.jpg   modbus 1.jpg (Size: 28.2 KB / Downloads: 73)

.jpg   modbus2.jpg (Size: 79.97 KB / Downloads: 73)
]]> Tried firmware upgrade - same issue. 
any ideas?Smile

.jpg   modbus 1.jpg (Size: 28.2 KB / Downloads: 73)

.jpg   modbus2.jpg (Size: 79.97 KB / Downloads: 73)
]]> <![CDATA[BACNET IP and IP filters comm]]> https://forum.logicmachine.net/showthread.php?tid=6375 Tue, 31 Mar 2026 10:09:47 +0000 ALEJANDRO]]> https://forum.logicmachine.net/showthread.php?tid=6375
I have two questions. The first concerns exporting data via BACnet IP.

I have a building with three Logic Machine 5 controllers connected. Each controller has been assigned a static IP address of the following type:

192.168.0.11

192.168.0.12

192.168.0.13

We have also created a VPN using the OpenVPN client to access it through the router located in the building.

My question is this: we need all three Logic Machines to export data via BACnet IP to a remote BMS. For some reason, only Logic Machine number one is exporting data. I'm not sure what I'm doing wrong, but I need Logic Machines 2 and 3 to also export a series of group IP addresses.

My second question concerns the filters. The group addresses loaded into logic machines 1, 2, and 3 are exactly the same. This is because we've placed the SCADA screens on logic machine 1, so logic machines 2 and 3 have to send data to logic machine 1 to be displayed on the screen loaded on logic machine 1.

My question here is this: I more or less understand, but I want to be sure. I want the following to happen:

LM2 and LM3 send data to LM1.

The data sent to LM1 should not be sent back to LM2 and LM3.

LM1 does not send data to LM2 and LM3.

How should the IP filters be configured? Thank you very much for everything.]]>
I have two questions. The first concerns exporting data via BACnet IP.

I have a building with three Logic Machine 5 controllers connected. Each controller has been assigned a static IP address of the following type:

192.168.0.11

192.168.0.12

192.168.0.13

We have also created a VPN using the OpenVPN client to access it through the router located in the building.

My question is this: we need all three Logic Machines to export data via BACnet IP to a remote BMS. For some reason, only Logic Machine number one is exporting data. I'm not sure what I'm doing wrong, but I need Logic Machines 2 and 3 to also export a series of group IP addresses.

My second question concerns the filters. The group addresses loaded into logic machines 1, 2, and 3 are exactly the same. This is because we've placed the SCADA screens on logic machine 1, so logic machines 2 and 3 have to send data to logic machine 1 to be displayed on the screen loaded on logic machine 1.

My question here is this: I more or less understand, but I want to be sure. I want the following to happen:

LM2 and LM3 send data to LM1.

The data sent to LM1 should not be sent back to LM2 and LM3.

LM1 does not send data to LM2 and LM3.

How should the IP filters be configured? Thank you very much for everything.]]> <![CDATA[Issues with KNX/IP and BACnet/IP when using 170.x.x.x network range]]> https://forum.logicmachine.net/showthread.php?tid=6356 Wed, 18 Mar 2026 10:00:56 +0000 Alberto.ricof]]> https://forum.logicmachine.net/showthread.php?tid=6356
I'm facing a strange issue with a LogicMachine in a project.

Current setup:

LAN network configured as: 170.25.18.x

Web access to the LM works fine

The issue:

ETS cannot connect (error reading device description on port 3671, ping works)

KNXnet/IP tunneling is not working

BACnet/IP export is also not working

However:

Web server works normally

IP connectivity is OK (ping works)

What I have already tried:

Reboot LogicMachine
Reboot router
Factory reset of the LogicMachine (no change in behavior)
Configured ETS interface properly 

My question is:

* Could using a public IP range like 170.x.x.x cause issues with KNX/IP (UDP/multicast) and BACnet/IP?

* Could the LogicMachine or router handle this differently compared to private networks (192.168.x.x / 10.x.x.x)?

Has anyone experienced something similar?

Thanks.]]>
I'm facing a strange issue with a LogicMachine in a project.

Current setup:

LAN network configured as: 170.25.18.x

Web access to the LM works fine

The issue:

ETS cannot connect (error reading device description on port 3671, ping works)

KNXnet/IP tunneling is not working

BACnet/IP export is also not working

However:

Web server works normally

IP connectivity is OK (ping works)

What I have already tried:

Reboot LogicMachine
Reboot router
Factory reset of the LogicMachine (no change in behavior)
Configured ETS interface properly 

My question is:

* Could using a public IP range like 170.x.x.x cause issues with KNX/IP (UDP/multicast) and BACnet/IP?

* Could the LogicMachine or router handle this differently compared to private networks (192.168.x.x / 10.x.x.x)?

Has anyone experienced something similar?

Thanks.]]> <![CDATA[Strange modbus scaling]]> https://forum.logicmachine.net/showthread.php?tid=6354 Tue, 17 Mar 2026 08:29:52 +0000 Ceros2112]]> https://forum.logicmachine.net/showthread.php?tid=6354
I have a modbus device that scales values in a strange way and I don't know how to make it work, if possible, with LM5.
Basically the formula is: (value+5)*2+30, in other words it reads values from -20 to 100 and represents values from 0 to 240

so, for example, if the value read by the instrument is -20, via modbus I will read 0.

Any ideas on how to integrate it in a json modbus profile?]]>
I have a modbus device that scales values in a strange way and I don't know how to make it work, if possible, with LM5.
Basically the formula is: (value+5)*2+30, in other words it reads values from -20 to 100 and represents values from 0 to 240

so, for example, if the value read by the instrument is -20, via modbus I will read 0.

Any ideas on how to integrate it in a json modbus profile?]]> <![CDATA[Remote connection via http server]]> https://forum.logicmachine.net/showthread.php?tid=6350 Fri, 13 Mar 2026 09:57:16 +0000 ALEJANDRO]]> https://forum.logicmachine.net/showthread.php?tid=6350
 Puerto Externo = WAN port
Puerto Interno = LAN port
.png   ports.png (Size: 46.43 KB / Downloads: 117)
]]>
 Puerto Externo = WAN port
Puerto Interno = LAN port
.png   ports.png (Size: 46.43 KB / Downloads: 117)
]]> <![CDATA[bacnet IP]]> https://forum.logicmachine.net/showthread.php?tid=6348 Thu, 12 Mar 2026 13:16:54 +0000 ALEJANDRO]]> https://forum.logicmachine.net/showthread.php?tid=6348 <![CDATA[no connection with LM5]]> https://forum.logicmachine.net/showthread.php?tid=6345 Thu, 12 Mar 2026 08:23:12 +0000 ALEJANDRO]]> https://forum.logicmachine.net/showthread.php?tid=6345 <![CDATA[Sending data between several logic machines 5]]> https://forum.logicmachine.net/showthread.php?tid=6344 Thu, 12 Mar 2026 07:26:28 +0000 ALEJANDRO]]> https://forum.logicmachine.net/showthread.php?tid=6344
I have a problem I don't know how to solve. I have a building with a BMS consisting of four logic machines. One is dedicated to controlling signals from a garage (pumps, alarms, etc.). The other three logic machines perform the following functions:

The building has three entrances and a garage. We have three logic machines installed in each entrance. Each of these three logic machines receives signals via KNX protocol from sensors (RH%, temperature, and CO2) and touch displays located in each of the 27 apartments in each entrance. Simultaneously, we receive data via Modbus RTU protocol from the apartment's electricity meters and hot water meters.

My problem is the following, and it's related to the KNX component. I created an ETS6 file with the group addresses of the sensors and displays for the homes. When I finished, I made three copies called portal 1, 2, and 3. The problem is that the group addresses are the same in ETS6, and this is reflected in each logic machine for each portal.

If I've created SCADA screens and, for example, loaded them into logic machine portal 1, how do I access the KNX data from portals 2 and 3 if they have the same group addresses as portal 1? Is there a solution to this problem?

I should mention that all the logic machines are connected to the same point, so I can view them simultaneously with a single UTP cable.]]>
I have a problem I don't know how to solve. I have a building with a BMS consisting of four logic machines. One is dedicated to controlling signals from a garage (pumps, alarms, etc.). The other three logic machines perform the following functions:

The building has three entrances and a garage. We have three logic machines installed in each entrance. Each of these three logic machines receives signals via KNX protocol from sensors (RH%, temperature, and CO2) and touch displays located in each of the 27 apartments in each entrance. Simultaneously, we receive data via Modbus RTU protocol from the apartment's electricity meters and hot water meters.

My problem is the following, and it's related to the KNX component. I created an ETS6 file with the group addresses of the sensors and displays for the homes. When I finished, I made three copies called portal 1, 2, and 3. The problem is that the group addresses are the same in ETS6, and this is reflected in each logic machine for each portal.

If I've created SCADA screens and, for example, loaded them into logic machine portal 1, how do I access the KNX data from portals 2 and 3 if they have the same group addresses as portal 1? Is there a solution to this problem?

I should mention that all the logic machines are connected to the same point, so I can view them simultaneously with a single UTP cable.]]> <![CDATA[Remote access]]> https://forum.logicmachine.net/showthread.php?tid=6341 Wed, 11 Mar 2026 12:28:55 +0000 ALEJANDRO]]> https://forum.logicmachine.net/showthread.php?tid=6341
We have installed a BMS for remote access. The BMS consists of two Logic Machine 5s with IP addresses 192.168.0.11 and 192.168.0.12. We have also installed a router with a LAN IP address of 192.168.0.1.

However, the person responsible for verifying the installation is unable to connect to the SCADA system remotely or via BACnet.

I am unsure how to properly configure remote access. I have enabled BACnet settings, entered a username and password, and left the port at its default settings.]]>
We have installed a BMS for remote access. The BMS consists of two Logic Machine 5s with IP addresses 192.168.0.11 and 192.168.0.12. We have also installed a router with a LAN IP address of 192.168.0.1.

However, the person responsible for verifying the installation is unable to connect to the SCADA system remotely or via BACnet.

I am unsure how to properly configure remote access. I have enabled BACnet settings, entered a username and password, and left the port at its default settings.]]> <![CDATA[control casambi light from Logic machine using MQTT]]> https://forum.logicmachine.net/showthread.php?tid=6329 Mon, 02 Mar 2026 07:23:40 +0000 Ranjeet]]> https://forum.logicmachine.net/showthread.php?tid=6329
We are currently working on integrating Casambi lighting control with LogicMachine using the Lithernet Casambi Gateway over the MQTT protocol. The LogicMachine client app has been successfully connected to the LogicMachine broker, and we have created a script to trigger the Casambi light based on object events.

However, despite the setup, the Casambi light is not responding to the commands. Could you kindly review our configuration and advise on possible issues or corrective steps to ensure proper operation?

Your guidance will be greatly appreciated.
.png   Screenshot 2026-03-02 124844.png (Size: 18.82 KB / Downloads: 65)
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We are currently working on integrating Casambi lighting control with LogicMachine using the Lithernet Casambi Gateway over the MQTT protocol. The LogicMachine client app has been successfully connected to the LogicMachine broker, and we have created a script to trigger the Casambi light based on object events.

However, despite the setup, the Casambi light is not responding to the commands. Could you kindly review our configuration and advise on possible issues or corrective steps to ensure proper operation?

Your guidance will be greatly appreciated.
.png   Screenshot 2026-03-02 124844.png (Size: 18.82 KB / Downloads: 65)
]]> <![CDATA[Modbus limits]]> https://forum.logicmachine.net/showthread.php?tid=6325 Tue, 24 Feb 2026 14:44:03 +0000 gdimaria]]> https://forum.logicmachine.net/showthread.php?tid=6325
A customer of mine asked me for a quote to connect 30 modbus multimeters via TCP to the LM.

For each multimeter, 25 registers need to be mapped.

The multimeters are grouped in two different IP address.

Is this possible?

Are there memory limits on the LM?]]>
A customer of mine asked me for a quote to connect 30 modbus multimeters via TCP to the LM.

For each multimeter, 25 registers need to be mapped.

The multimeters are grouped in two different IP address.

Is this possible?

Are there memory limits on the LM?]]> <![CDATA[Siemens PXC controller and LM bacnet client for Visu]]> https://forum.logicmachine.net/showthread.php?tid=6324 Tue, 24 Feb 2026 12:47:28 +0000 MuranyiD]]> https://forum.logicmachine.net/showthread.php?tid=6324
I am looking for a tool to visualize Siemens PXC4/5/7 controllers with LM communicating the data points via Bacnet/IP. 
If I understand correctly in this case I would need to use the bacnet client library of LM.  I tried looking into the capabilities of the bacnet client and I have found older forum posts stating that it's limited in the number of data points it can handle and also lacks discovery features.
Would there be a viable solution to read and write a few hundreds of data points with the bacnet client of LM? If not, could you recommend any other solutions with LM?

Thank you for your answer in anticipation!]]>
I am looking for a tool to visualize Siemens PXC4/5/7 controllers with LM communicating the data points via Bacnet/IP. 
If I understand correctly in this case I would need to use the bacnet client library of LM.  I tried looking into the capabilities of the bacnet client and I have found older forum posts stating that it's limited in the number of data points it can handle and also lacks discovery features.
Would there be a viable solution to read and write a few hundreds of data points with the bacnet client of LM? If not, could you recommend any other solutions with LM?

Thank you for your answer in anticipation!]]> <![CDATA[Modbus IP Persistent connection and RTU Together Problem]]> https://forum.logicmachine.net/showthread.php?tid=6296 Wed, 04 Feb 2026 22:21:01 +0000 savaskorkmaz]]> https://forum.logicmachine.net/showthread.php?tid=6296 We have an energy monitoring project with the following setup:
  • 36 Modbus RTU Energy Analyzers connected via 5 Modbus RTU to IP converters
  • 4 Modbus RTU Rooftop devices connected directly to the LM5 RTU-1 port
  • Each energy analyzer has approximately 90 data points
  • For the 36 energy analyzers (via RTU/IP converters), we are using Persistent Connection
My question is about performance:
The Rooftop devices connected directly via Modbus RTU are extremely slow — data updates are almost not coming at all.
Could this behavior be caused by using Persistent Connection for the 36 energy analyzers?
In other words, can persistent connections on the Modbus TCP side negatively affect the polling performance of devices connected on a separate Modbus RTU port?
What would be the ideal communication settings for this kind of project on both sides:
  • Modbus TCP (RTU/IP converters)
  • Modbus RTU (directly connected Rooftop devices)
Any recommendations regarding polling intervals, request grouping, persistent vs non-persistent connections, or general best practices would be greatly appreciated.
Thank you.]]> We have an energy monitoring project with the following setup:
  • 36 Modbus RTU Energy Analyzers connected via 5 Modbus RTU to IP converters
  • 4 Modbus RTU Rooftop devices connected directly to the LM5 RTU-1 port
  • Each energy analyzer has approximately 90 data points
  • For the 36 energy analyzers (via RTU/IP converters), we are using Persistent Connection
My question is about performance:
The Rooftop devices connected directly via Modbus RTU are extremely slow — data updates are almost not coming at all.
Could this behavior be caused by using Persistent Connection for the 36 energy analyzers?
In other words, can persistent connections on the Modbus TCP side negatively affect the polling performance of devices connected on a separate Modbus RTU port?
What would be the ideal communication settings for this kind of project on both sides:
  • Modbus TCP (RTU/IP converters)
  • Modbus RTU (directly connected Rooftop devices)
Any recommendations regarding polling intervals, request grouping, persistent vs non-persistent connections, or general best practices would be greatly appreciated.
Thank you.]]> <![CDATA[Curtain Dooya dt82tv]]> https://forum.logicmachine.net/showthread.php?tid=6290 Mon, 02 Feb 2026 12:14:11 +0000 Zhiger2003]]> https://forum.logicmachine.net/showthread.php?tid=6290
.png   Снимок экрана 2026-02-02 171319.png (Size: 64.62 KB / Downloads: 96)
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.png   Снимок экрана 2026-02-02 171319.png (Size: 64.62 KB / Downloads: 96)
]]> <![CDATA[bacnet parameters]]> https://forum.logicmachine.net/showthread.php?tid=6267 Fri, 23 Jan 2026 10:19:33 +0000 ALEJANDRO]]> https://forum.logicmachine.net/showthread.php?tid=6267 My client is requesting a BACnet IP mapping with a series of characteristics that I don't see in the Logic Machine configurations. They need a column with units and data type.

I'm not sure if this configuration exists to be included in the CSV file. I've looked here: https://kb.logicmachine.net/integration/bacnet-server/, and I don't find anything.

I've attached screenshots of what they're requesting. Thank you very much.
.png   Captura de pantalla 2026-01-23 111853.png (Size: 89.88 KB / Downloads: 98)
]]> My client is requesting a BACnet IP mapping with a series of characteristics that I don't see in the Logic Machine configurations. They need a column with units and data type.

I'm not sure if this configuration exists to be included in the CSV file. I've looked here: https://kb.logicmachine.net/integration/bacnet-server/, and I don't find anything.

I've attached screenshots of what they're requesting. Thank you very much.
.png   Captura de pantalla 2026-01-23 111853.png (Size: 89.88 KB / Downloads: 98)
]]>