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I want to ask, hopefully someone can help

Modbus 6 months ago at 01:00 AM

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1188Views
25Replies
Last message by jschulze on November 27, 2025 at 06:25 AM
SIEMENS PLC to PLC communication failure between S7 300 and S7 400 systems.

Power Generation 5 years ago at 11:20 PM

Forums
11148Views
16Replies
Last message by Matiralo on November 24, 2025 at 09:21 AM
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Rayleigh Instruments RI-D480 Integration to Siemens TXI2-Open

Modbus 6 months ago at 03:31 PM

Forums
462Views
1Replies
Last message by jschulze on November 13, 2025 at 07:38 AM
Honeywell S9000 serial communication Reference

Programmable Logic Controller - PLC 19 years ago at 06:13 PM

Forums
3223Views
5Replies
Last message by jalil29 on November 11, 2025 at 06:06 AM
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Modbus communication between two masters

Modbus 7 months ago at 12:41 PM

Forums
653Views
4Replies
Last message by David_2 on October 23, 2025 at 04:28 PM
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Bye-bye Modbus? No more free downloads of the Modbus specs

Modbus 8 months ago at 10:52 AM

Forums
4793Views
1Replies
Last message by David_2 on October 8, 2025 at 09:55 AM
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ION 7550 Modbus point

Modbus 8 months ago at 04:11 AM

Forums
716Views
8Replies
Last message by clpabella on September 10, 2025 at 08:01 PM
MODBUS ASCII Protocol Standard / Definition or .NET library?

Modbus 9 months ago at 01:33 PM

Forums
1096Views
2Replies
Last message by mjeschke on September 3, 2025 at 02:19 PM
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Remote IO using rs485 (or twisted shielded pair) with 4-20ma on both ends

Instrumentation & Measurement 10 months ago at 10:20 AM

Forums
1383Views
6Replies
Last message by David_2 on July 31, 2025 at 01:54 PM
Struggle to Communicate with Various Energy Meters on the same Cable

Modbus About 11 months ago at 03:10 AM

Forums
1033Views
5Replies
Last message by patrickduis on July 18, 2025 at 03:58 AM
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Trying to integrate A/C system with home assistant

Modbus 5 years ago at 04:53 AM

Forums
3045Views
3Replies
Last message by JonClk on July 13, 2025 at 10:21 PM
Data exchange between 2 Delta PLC's DVP-12SE

Programmable Logic Controller - PLC 4 years ago at 05:08 AM

Forums
3716Views
5Replies
Last message by pupo on June 25, 2025 at 12:43 AM
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Energy Metering Communicating Gibberish & Incorrect Info over Modbus RTU

Modbus 11 months ago at 06:56 AM

Forums
2525Views
25Replies
Last message by WTF? on June 20, 2025 at 07:38 AM
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Help with Honeywell UDC5300 Controller Serial Communication

General Communications Chat 11 months ago at 04:13 PM

Forums
789Views
5Replies
Last message by John_STL on June 18, 2025 at 06:26 PM
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Modbus for pH measurement and control.

Modbus 11 months ago at 06:44 AM

Forums
765Views
2Replies
Last message by bidrohini on June 15, 2025 at 02:49 AM
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Short range 24VAC wireless signal transmission

General Automation Chat One year ago at 02:07 PM

Forums
859Views
1Replies
Last message by Chris T on May 7, 2025 at 12:37 PM
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How to Map Modbus RTU Data to HTTP POST Parameters for Protocol Converter Gateway?

Modbus One year ago at 06:44 AM

Forums
2034Views
1Replies
Last message by jschulze on April 18, 2025 at 07:42 AM
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What could be causing lag in Modbus TCP/IP between Siemens PLC and PC

General Communications Chat One year ago at 12:21 PM

Forums
1734Views
2Replies
Last message by jschulze on April 17, 2025 at 05:41 PM
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head scratcher - PtP RTU runs with Windows box, but only temporarily with PLCs

Modbus One year ago at 04:48 PM

Forums
903Views
3Replies
Last message by jschulze on April 11, 2025 at 08:33 AM
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İnvt modbus rtu start stop problem

Modbus One year ago at 03:03 AM

Forums
1284Views
5Replies
Last message by apa on April 3, 2025 at 07:36 AM