Link Communications RLC-1, Руководство пользователя

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Copyright 1993 Link Communications
In Depth Command Description: C023
Analog Offset Adjust
This command allows for offset adjustment of the analog lines. This command is used to calibrate
the information read in by the RLC-1. If a known voltage or current is not read correctly by the
RLC-1 (is off by a few degrees or volts), that input can be calibrated by changing the offset
associated with that analog line.
Description Command CW Response
Offset Adjust C023*$ ##* CW BEEP RSP
Parameters:
$ Analog 1..4 Selected
## Offset Number, 00..19
- An offset value of 10 is equal to an offset of 0.
- An offset value of 19 is an offset of +9 counts
- An offset value of 01 is an offset of -1 counts
- An offset value of 09 is an offset of -9 counts
Example: You want to calibrate the reading of the battery voltage
- Read the voltage with a calibrated meter
- Read the voltage with the RLC-1
- Increase of decrease the Offset until the Voltage reading is correct
Example: You want to calibrate your LM135, LM235, LM335 temperature sensor
- With a voltage meter read the voltage at the analog input
- This voltage corresponds to Kelvin/100
- To convert Kelvin to Celcius, you subtract 273 from the number
-- 2.85 Volts is actually 285K which is 12
E
C
- To Convert Celcius to Farenheit: Farenheit=(Celcius * 1.80) + 32
- Read the Temperature with the RLC-1
- Add or Subtract the Offset until the Temperature reading is correct
Error Messages:
If the format is not correct, the RLC-1 will send a "E" error code.
ER1 - Too many digits Entered
ER2 - Invalid Analog Line Selected
ER3 - Number to Large Entered