πŸ›‘οΈ Integration of SIS with DCS β€” Explained Simply

In modern plants, SIS and DCS work together… but they must remain independent πŸ‘‡

βš™οΈ What is DCS?

➑️ Distributed Control System
➑️ Handles normal process control

Controls:
πŸ”Ή Temperature
πŸ”Ή Pressure
πŸ”Ή Flow
πŸ”Ή Level

πŸ‘‰ Goal = Keep process running

βš™οΈ What is SIS?

➑️ Safety Instrumented System
➑️ Protects plant during dangerous conditions

πŸ‘‰ Goal = Keep process safe

πŸ”— Why integrate SIS with DCS?

Even though they are separate systems, operators still need:

⚑ Alarm monitoring
⚑ Trip indications
⚑ Status monitoring
⚑ Diagnostics & event logs

πŸ‘‰πŸ‘‰ Video:
https://www.youtube.com/watch?v=y5lw5rYrvgU&list=PLI78ZBihrkE16q3wWOVERKVd_r0wakGYF&index=5

🧠 How integration happens

Typically through:

πŸ”Ή Modbus
πŸ”Ή OPC
πŸ”Ή Profibus
πŸ”Ή Ethernet/IP
πŸ”Ή Proprietary safety communication

πŸ‘‰ SIS shares information with DCS

⚠️ Important rule

Difference between SIS and BPCS - Safety Instrumented Systems Training

YouTube