192 HC900 Process & Safety Controller User and Installation Manual Revision 6
21 April 2017
Analog Calibration
Overview
All calibration data for Analog Input Modules and Analog Output Modules is stored in non-volatile
memory in the I/O modules. Calibration data is stored for each channel of each AI or AO module.
Calibration data for each channel can be either:
Factory calibration, which is stored permanently in the module, and
Field Calibration, which is entered from an HMI (OI- on the galvanically isolated RS-485 Port, and/or a
PC on the RS-232 Port and/or the Ethernet 10/100 Base-T Port using Designer Software .
A field calibration procedure consists of two parts:
Connecting a calibration device to each channel of an AI or AO module, and
Using the Control Station, HC Designer, or HC Utilities to select actions and enter custom calibration
data values calibration into the I/O module.
This section contains information and instructions for connecting calibration devices.
Hazardous voltages exist at the Power Supply and at the terminal boards on I/O
Modules
Only trained and authorized personnel should perform the procedures in this section.
Failure to comply could result in death or serious injury.
For calibration procedures, refer to the Control Station manual or Process Control
Designer manual.
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