KERN scale series
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 | |
| Status | supported |
|---|---|
| Source code | kern-scale |
| Connectivity | RS-232 |
| Measurements | mass |
| Website | kern-sohn.com |
The KERN scale is a series of weighing scales with RS-232 connectivity.
Devices
| Device | Max. weight | Readout | Protocol | Comments |
|---|---|---|---|---|
| KERN EW 220-3NM | 220 g | 0.001 g | 14/15-byte ASCII | |
| KERN EW 420-3NM | 420 g | 0.001 g | 14/15-byte ASCII | |
| KERN EW 620-3NM | 620 g | 0.001 g | 14/15-byte ASCII | |
| KERN EW 820-2NM | 820 g | 0.01 g | 14/15-byte ASCII | |
| KERN EW 2200-2NM | 2200 g | 0.01 g | 14/15-byte ASCII | |
| KERN EW 4200-2NM | 4200 g | 0.01 g | 14/15-byte ASCII | |
| KERN EW 6200-2NM | 6200 g | 0.01 g | 14/15-byte ASCII | |
| KERN EW 12000-1NM | 12000 g | 0.1 g | 14/15-byte ASCII | |
| KERN EG 220-3NM | 220 g | 0.001 g | 14/15-byte ASCII | |
| KERN EG 420-3NM | 420 g | 0.001 g | 14/15-byte ASCII | |
| KERN EG 620-3NM | 620 g | 0.001 g | 14/15-byte ASCII | |
| KERN EG 2200-2NM | 2200 g | 0.01 g | 14/15-byte ASCII | |
| KERN EG 4200-2NM | 4200 g | 0.01 g | 14/15-byte ASCII |
Protocol
The devices use a simple ASCII-based protocol over an RS-232 cable.
The default settings are (device-dependent), e.g., 1200 8N2, but the devices usually have a menu where the user can change the baud rate, parity settings, and so on.
There are two different packet lengths (also user-configurable via the menu): 14-byte packets and 15-byte packets.
See e.g. the KERN EW/EG-N/EWB series user manual for more protocol details.