Page 14 of 24
How to upgrade the Firmware
In case you need to update the firmware on Neets Switching Relay – 8.
Please follow these four simple steps below.
1. Install Neets Project designer 1.6.4 or higher
2. Connect the unit to your computer
3. Say “Yes” to upgrade the unit
4. The firmware is now completed
How to connect several relay boxes to a RS-232 Line
(daisy chaining)
By default, a RS232 line only allows you to be connected to a single receiver. But with the Relay –
8 you can control multiple units with just a single RS232.
So how do we do this?: Each Relay – 8 can be assigned a id number (Default 1) that allows you to
define what unit a command should be handled by.
If the Relay – 8 device a command on Tx1 that has a id number different from itself, it will
re-transmit the command on Tx2.(This function is called RS232 loop-through)
So adding a second Relay – 8 on the first Relay – 8 Tx 2 will allow you to control this. This is called
daisy chaining the units.
Remember to assign different ID number to each of the Relay – 8 you are using in this constella-
tion. See page 12 for details on how to change the id. Using the same ID number on multiple units
will result in only one Relay – 8 will react to the command and not all with same id number.
Neets Switching Relay 8
After a firmware upgrade all saved settings will be lost
and have to be saved again.
i
i