Overview
When devices are connected to the Option Bus on the FPD-7024, the bus must be scanned allowing the panel to see the device. After removing devices, such as the DX4020, DX4010V2 or DX4010i, the option bus must be scanned again to complete the removal, or the panel continues to supervise the device resulting in a keypad display: Trouble DX4020 and history event: SYSTRB017.
Issue
After completing programming the panel reports trouble DX4020; history shows SYSTRB017
Solution
After removing the DX4020, DX4010V2 or DX4010i, the option bus must be scanned again to complete the removal or the panel continues to supervise the device.
From the Panel Keypad (not a remote keypad) perform the following steps to update the option bus:
- Select 0 for PROGRAMMING and enter the installer code
- Select 3 for PROGRAM SYSTEM
- Select 4 for OPTION BUS
- Select 1 for UPDATE BUS
