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IMPORTANT NOTE: For I/O calibration on TFIO modules refer to PCCU32 online help
topics. Topics for calibration of each module type are available when you click Help on the
applicable screens.
11.5.1
Connect calibration equipment
A calibrator simulates the external device attached to the controller AI during analog input calibration.
The calibrator applies the signal (voltage or current) values that would otherwise come from the
external device.
IMPORTANT NOTE: Verify that the voltage or current values from the calibrator do not
exceed the acceptable analog input ranges. Verify that the signal is the same type as the AI
configuration. Do not turn the calibrator on until the AI is configured for the correct input
signal type.
NOTICE – Tainted results: The wire length from the external device to the AI affects the
calibration. Only use wires of the correct length from the XSeries
when you connect the calibrator. Or, place the calibrator at the location where the external
device is installed.
To prepare and connect the calibration equipment:
Power off the XSeries
Disconnect the wires from the external device.
Set the calibrator to the same signal type (voltage or current) as the AI mode setting.
Connect the calibrator to the external device's wire ends. Observe the polarity and connect
to the correct wire: positive probe to the signal wire, and negative probe to the negative or
ground wire.
Keep the XSeries
Figure 11-3: Calibration equipment connection to XRC
11.5.2
Set the AI to the correct input signal mode
XSeries
devices support voltage or current input signals from external devices. Before proceeding with the
G5
calibration or restoring power to the device, make sure you set the correct AI mode.
To set the AI input signal mode:
Locate the AIs (XFC: J8, XRC: J23).
G5
.
G5
powered off to set the correct AI mode in the next section.
G5
G5
AI
2 1 0 60 26M NAA | XSER IE S
to the external device
G 5
| 1 3 1
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