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AP_117745424-Participant
4-Participant
September 12, 2024
Solved

Inter-Request Delay wtih Modbus TCP

  • September 12, 2024
  • 1 reply
  • 992 views

Hi

 I'm using Kepware KEPServer EX 6.16 and connect a Modbus TCP device.

Data acquisition is ok and Datalogger in ODBC also is ok.

 

The process is to acquire 3000 registers and archive in a Database.

I noted that when Inter-Request Delay when is set to 0 the requests to the Modbus TCP device are very very high (higher then I need) but if I set to a number near the Scan Rate (5000 ms) of each tag I don't have all the value expected in database Static Interval (10 seconds),

 

how can I set this parameter (or other) to have less query and stay to the Static Interval lapse?

I don't have issue about timeout or delay in communications.

Albe

 

Best Regards 

Catalina_0-1726127903866.png

 

Best answer by MKhatri

Hello,

 

I wanted to bring to your attention that it appears the Inter-Request Delay setting may be incorrect, resulting in missing updates in the DL. To address this issue, I kindly request that the Inter-Request Delay be set back to 0. Additionally, I recommend trying to set the scan mode to "scan all data at" 5000 ms.

 

Thank you for your attention to this matter. Please let me know if you require any further clarification or assistance.

 

Regards,

Mohit

1 reply

M
MKhatri15-MoonstoneAnswer
15-Moonstone
September 12, 2024

Hello,

 

I wanted to bring to your attention that it appears the Inter-Request Delay setting may be incorrect, resulting in missing updates in the DL. To address this issue, I kindly request that the Inter-Request Delay be set back to 0. Additionally, I recommend trying to set the scan mode to "scan all data at" 5000 ms.

 

Thank you for your attention to this matter. Please let me know if you require any further clarification or assistance.

 

Regards,

Mohit

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