Sigma – Delayed Alarms at the Sigma Server

[Product_Support]

Issue

Alarms generated by Sigma controllers are sometimes delayed in appearing at the Sigma server. This behavior is inconsistent—manual alarm tests display correctly, but real-time alarms may not appear until other activities are performed.

Product Line

Satchwell BAS & Sigma

Environment

Satchwell Sigma

Cause

There are two recommended solutions depending on your network setup:

Option 1: Disable Windows Firewall

If the Sigma server is not connected to the Internet, you can safely disable the Windows Firewall to allow uninterrupted alarm communication.

⚠️ Note: The method to disable the firewall varies by operating system. Use the system's Help feature for guidance.

Option 2: Add a Firewall Exception

If disabling the firewall is not viable, configure a firewall exception for Sigma:

1. Open Windows Firewall.
2. Navigate to the Exceptions tab.
3. Select Add Port.
4. Enter the following details:
   • Name: Sigma UDP Port
   • Port Number: 49152
   • Protocol: UDP

✅ This allows Sigma alarm messages to pass through even when the firewall is active.

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Additional Notes

• Port 49152 is specific to Sigma and must be configured as a UDP port.