The RS 485 bus operates in half-duplex mode. The connections A+ (Transmit/) and
B- (Transmit/Receive-) must never be confused. The protocols of the RS 485 interface
correspond to the RS 232 interface. Cable lengths of up to 1km are possible.
The RS 485 interface can be activated alternatively to the RS 232 interface. Simultaneous
operation of both interfaces is not necessary. As soon as parameter 3 has been set to 1 in
the setup, the RS 485 interface is active.
Optionally you can get an additional converter from EHP Wägetechnik. With this converter
you have the possibility to connect the Telebox PLC with a Profibus network. A sample file
(GDS file) with the basic configuration of the converter can be found on the supplied Driver
& Manual CD.
The Telebox PLC works with a completely revised menu and operating structure. A change of
the parameters and their values is solved with a simple up/down menu.
Explanation of the key functions:
The setup is locked via a master password! You can reach the menu via the following key
combination:
Press the OK and Next keys together, 00000 appears in the display.
With Up/Down change the value, with Next you reach the next position
Set the menu code 77815 and confirm it with OK. The position that can be changed is
indicated by the number flashing.
Provided the code has been entered correctly, you can move freely in the setup. If it was
entered incorrectly, no changes can be made. You only have access to some flash card
functions. You can exit the parameter or the setup at any time by pressing the ESC key. No
data will be saved.
Alternatively, it is also possible to operate the setup with the handheld transmitter.
Only the key combination OK and Next must be pressed on the telebox to reach the setup.
00000 appears in the display.
Key I / OK
Confirm selection
Key 0 / ESC
Demolition
Key A / Up
Change value/parameter upwards
Key B / Down
Change value/parameter downwards
Tare / Next key
Next position in parameter
