Rockwell Automation 1771-IR Series D RTD Input Module User Manual User Manual
Page 41
6–3
Calibrating Your Module
Publication 1771Ć6.5.129 - March 2000
Write Block Transfer Word 15
Word Bit
17
16 15 14 13 12 11 10 07 06 05 04 03
02
01
00
Inhibit Calibration on Channel
Requested Auto-Calibration
Word 15
Set these
bits to 0
6
5
4
3
2
1
Set these bits to 0
Requested
Save
Values
Requested
Gain Cal.
Requested
Offset Cal.
NOTE: Normally, all channels are calibrated simultaneously (bits
10–15 of word 15 are octal 0). To disable calibration on any channel,
set (1) the corresponding bit 10 through 15 of word 15.
4. Queue block transfer reads (BTRs) to monitor for offset
calibration complete and any channels which may have not
calibrated successfully. Refer to the table below.
Read Block Transfer Word 9
Word
Bit 17 16 15 14 13 12 11 10
07
06
05 04 03
02
01
00
Uncalibrated Channels
Auto-Calibration Status
Word 9
Not
used
6
5
4
3
2
1
Cal.
Fault
EEPROM
Fault
Not used
Saveto
EEPROM
Complete
Gain Cal.
Complete
Offset Cal.
Complete
5. Proceed to gain calibration below.