Retransmission in the Modbus that cause this (suspected) spurious

1

Hi,

An PLC (Programmable Logic Controller) Schneider Electric is contacting an Interfaces Homme Machine (IHM), when analyzing the network traffic between them sometimes the PLC retransmit several times some packets to the IHM. The tcp this frame is a (suspected) spurious retransmission.

sponse contained a different quantity of data (5 bytes) with respect to the requested quantity of points (912) and bytes (114).

What is cause of this retransmission in the Modbus that cause this (suspected) spurious ?

retransmission-in-the-modbus-that-cause-this-suspected-v0-777xx5xij7kd1
retransmission-in-the-modbus-that-cause-this-suspected-v0-777xx5xij7kd11504×386 198 KB
retransmission-in-the-modbus-that-cause-this-suspected-v0-oigajyzkh7kd1
retransmission-in-the-modbus-that-cause-this-suspected-v0-oigajyzkh7kd11633×564 148 KB

Thanks,