Chapter 1 Introduction
ET-7000 AIO User Manual, Apr. 2009, V1.04, EMH-011-104----------46
It is not recommended that calibration be performed until
the process is fully understood.
1.8.3. The calibration procedure for ET-7018Z:
1. Warm up the module for at least 30 minutes.
2. Enable channel 0 and disable the other channels.
3. Set the type code of channel 0 to the type you want to calibrate.
9. Enable calibration.
10. Apply the zero calibration voltage/current to channel 0.
11. Enable the zero calibration register.
12. Apply the span calibration voltage/current to channels 0.
13. Enable the span calibration register.
14. Disable calibration.
Table 1.8.9 Modbus address for calibration:
Register Points Description Access Type
00830 1
Enable/Disable Calibration
0=Disabled
1=Enabled
R/W
00831 1 Performs a zero calibration, 1 = run. W (Pulse)
00832 1 Performs a span calibration, 1 = run. W (Pulse)
Table 1.8.10 Calibration voltage/current used by the ET-7018Z series:
Type code
00 01 02 03 04 05 06
Zero Input
0mV 0mV 0mV 0mV 0V 0mV 0mA
Span Input
+15mV +50mV +100mV +500mV +1V +2.5V +20mA
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