Rice Lake DWM-IV Digital Weighmeter Model 5 - Manual (Page 22)

6.2 Remote Commands
The Model 5 will respond to the following single character ASCII commands
sent to it via the RXD input line:
Command Action
Z Zero Meter
T Tare Meter
G Gross Weight Mode
N Net Weight Mode
L Select Pounds Mode
K Select kilograms Mode
P Print