Rockwell Automation 1771-IXHR , D17716.5.80 HIGH RESOL.THERMOCOUPLE - Manual (Page 31)

Module Configuration
Chapter 5
5Ć8
Word Description Bits
Words 20
thru 27
Calibration words are a composite of two independent bytes for each
channel. Enter calibration data in signed magnitude binary only. The
most significant bit in each byte is the sign bit; set for negative, reset
for positive.
Use the high byte (bits 08-15) for offset correction, the low byte (bits
00-07) for gain correction for each channel. Use word 20 for channel
1 thru word 27 for channel 8.
Refer to Chapter 7 for calibration procedures.
Word 28 Auto-calibration request word - used to automatically calibrate
selected channels and save the calibration constants in EEPROM.
(Refer to Chapter 7.)
Table 5.E
Example Zoom Settings for Word 2
Zoom Settings Bit Settings (15-08) or (07-00)
Zoom center = 70mV (maximum) 01000110 (decimal equivalent 70)
Zoom center = 0mV 00000000 (decimal equivalent 0)
Zoom center = -1mV 11111111 (decimal equivalent -1)
Zoom center = -70mV (minimum) 10111010 (decimal equivalent -70)
Only used in millivolt mode with Z = 1. Millivolt data will be in 1 µ V resolution with range of +30.000mV.
Zoom will be used to center the range of interest between +70mV. Over and underrange bits will be
asserted outside of the display range. For decimal equivalent values from 71 to 127 and -71 to -128
the zoom center will default to 0.
Table 5.F
Example Filter Values for Word 3
Filter Value
Bit Setting
(15-08) or (07-00)
No filter 0000000
Tau = 50ms 00000001
Tau = 75ms 00000010
Tau = 6.4 seconds 11111111
Filter values increase in increments of 25msec.
In this chapter you learned how to configure your module’s hardware, condition
your inputs and enter your data.
Chapter Summary