Rockwell Automation 1771-TCM,D17716.5.108 TEMPERATURE CONTROL MOD - Manual (Page 78)

Calibrating the Module
Chapter 8
8-5
You can calibrate any number of loop input channels, in any order. Set up
a calibration write block as shown in Table 6.A.
Important: In order to allow the module to stabilize, energize the module
for at least 30 minutes before calibrating.
1. In the input calibration mask (word 2) of the calibration write block,
turn each bit corresponding to each loop you want to calibrate. Refer
to Table 6.A.
2. Apply the appropriate low reference signal (Table 6.C) to the input of
each loop being calibrated (for loop 1, I1 on RTP).
Table 6.C
Calibration Reference Signal Values
Type Low Reference Value High Reference Value
100mV/TC input 0.000mV 100.000mV
3. In the calibration write block
a. turn off the calibration high/low bit (word 2, bit 0)
b. turn on the calibration clock bit (word 2, bit 1)
4. Send (block-transfer write) the calibration write block to the module.
5. In the calibration write block
a. turn off the calibration high/low bit (word 2, bit 0)
b. turn off the calibration clock bit (word 2, bit 1)
6. Send (block-transfer write) the calibration write block to the module.
7. Apply the appropriate high reference signal (Table 6.C) to the input
of each loop being calibrated (for loop 1, I1 on RTP)
8. In the calibration write block
a. turn on the calibration high/low bit (word 2, bit 0)
b. turn on the calibration clock bit (word 2, bit 1)
9. Send (block-transfer write) the calibration write block to the module.
Calibration Procedure