Owner's manual

74 Rockwell Automation Publication 1769-UM005B-EN-P - March 2012
Chapter 4 Module Data, Status, and Channel Configuration
Calculating Module Update Time with Autocalibration Enabled
The following example illustrates how to determine module update time with
autocalibration enabled.
Table 19 - Calibration Steps and Their Affect on Module Update Time
Calibration Step Calibration Time (ms)
Step 1 RTD ADC zero 73 ms
Step 2 RTD ADC span 106 ms
Step 3 RTD system zero 73 ms
Step 4 RTD ADC wire zero 73 ms
Step 5 RTD ADC wire span 106 ms
Step 6 system wire zero 73 ms
Current Source Calibration Calibration Time (ms)
Current source zero 73 ms
Current source gain 106 ms
Current source resistor calibration 303 ms
Table 20 - Input Type and Class
Input Type
Input Class
Using 0.5 mA Source Using 1.0 mA Source
100 Ω Pt 385 1 2
200 Ω Pt 385 2 3
500 Ω Pt 385 3 4
1000 Ω Pt 385 4 Cannot use this source
100 Ω Pt 3916 1 2
200 Ω Pt 3916 2 3
500 Ω Pt 3916 3 4
1000 Ω Pt 3916 4 Cannot use this source
10 Ω Cu 426 Cannot use this source 6
120 Ω Ni 618 1 2
120 Ω Ni 672 1 2
604 Ω NiFe 518 3 4
150 Ω 51
500 Ω 12
1000 Ω 23
3000 Ω 4 Cannot use this source