VIVA TOLEDO SCALE SETUP STEPS
https://www.manualslib.com/manual/861274/Mettler-Toledo-Viva.html?page=15#manual
This scale requires the two cables for it to work properly.
To enter config – While powering on the scale, hold 0
Use T key to cycle through groups until you come to GRP 3. Adjust the settings to match below.
9600 Baud Rate, 7 Data Bits, 1 Stop Bit, Even Parity