If the AD-1687 receives data from the balance in a format that cannot be processed, "Communication Error" will be displayed on the AD-1687.
If such an error occurs, please check the following settings.
- When connecting the balance and the AD-1687, make sure to connect the RS-232C cable to the AD-1687 while the power is off.
- For the balance's "data output" settings, change "data number", "ID number", and "data/time" to "no output".
* The factory settings for the balance have "no output" set by default. - Change the balance's "data format" setting to something besides "CSV format".
- Confirm that "baud rate" and "bit length, parity" are the same for the balance and the AD-1687.