I took a different approach than using the IP150. You can use the ESP boards and connect the panel’s RS232 port to the ESP. The ESP becomes a WiFi gateway and connects to MQTT. I’m still using the old ESP8266 but here is a link to the ESP32 version.
This allow me to have DISARM, ARM HOME, ARM NIGHT and ARM AWAY functionality within HA. The alarm zones also become sensors in HA so you can use it in your code for automation.