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How to know Modbus Slave is still receiving values
When I want to be sure that both the master and slave communicate with each other, I use counters from 1-100. The master sends its counter value to the slave, the slave adds 1 to it and the master reads that back. If it was increased by the slave, the master knows the slave is still running. And...- patrickduis
- Post #5
- Forum: Modbus
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Intergral Windup method in PID control
If you -really- want a good stable and reliable control, use RKC equipment. I used it for many ovens of all types during my Philips times, vacuum, heat treatment, tunnel, batch, ceramic, glass, you name it. And it always worked great. So great, that I decided to even go work for the company that...- patrickduis
- Post #7
- Forum: Process Control
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Proface HMI Interface Protocol
A GP4301TAD has a serial port that you can use for Modbus RTU master or slave. The ethernet port can either be configured as master or slave. It is even possible to use the ethernet port with more than 1 device, and 1 device is the Modbus TCP master while the 2nd device is a modbus TCP slave.- patrickduis
- Post #2
- Forum: General Communications Chat
