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Here are some questions...
Probably you need to connect the signal ground on the unit to the signal ground on your RS422/485
LAC 65 uses a measuring technique where the ekscitationsvoltage constantly changes polarity. Because of that you can’t get any usable values with an ordinary meter. You have to use an oscilloscope
All changes in calibration data, like placing of the comma etc, must be saved by using the “CS” (calibrate Save) command.
You have used the unit with communication set to the factory setup which is “half duplex”, and is used for two wire RS485 communication. This setup only allows the unit to send data on request and not...
Most likely you need to connect the signal ground on the unit to the signal ground on your RS422/485
The first strain gauge was developed in the 1940’s
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