![background image](http://html1.mh-extra.com/html/watts/blucher-connected-roof/blucher-connected-roof_user-manual-and-installation-manual_3779458021.webp)
REV. 01 - OCTOBER 2020 - BLÜCHER
®
CONNECTED ROOF
21
8
Modbus interface
8.1
Supported function codes
Function code
Command text
03 (03hex)
Read holding registers
04 (04hex)
Read input registers
06 (06hex)
Write single register
16 (10hex)
Write multiple registers
8.2
Modbus Termination
Jumper switch position
Description
1
ON
Internal termination resistor is connected
OFF
Internal termination resistor is disconnected
NB.
Power off before changing the jumper
switch position.
9
Gateway software update
To install the new software, follow these steps:
1. Press the push button for 5 seconds - this allows the SD card to be ejected.
2. Copy the update file to the SD card.
3. With the SD card reinstalled in the Gateway, the Gateway will reboot, and the new
software will automatically be installed - the .bin file will automatically be removed from the
SD card after a successful update.