Allen-Bradley 1794-IRT8 - EDT Calibration Command and Command Data; EDT Calibration Commands and Command Data

Publication 1794-6.5.12 - November 1997
Calibrating Your Module 6-5
EDT Calibration Command and Command Data
Command Meaning
Data
(up nibble)
Data
(low nibble)
Meaning
Dec. (Hex) channel command
4 General Calibration by Channel 0-15 0 zero offset and gain coefficients
0-15 1 channel internal current source and current sense
resistor, with 4-wire external 383Ω inputs
0-15 2 channel internal current source and current sense
resistor with 4-wire external 100Ω inputs
0-15 3 loop resistance compensation for 2 wire RTD
0-15 4 CJC calibration
0-15 5-15 not used
5 Offset Calibration by Channel 0-15 0 gain= 1, input = –320 mV
0-15 1 gain= 2, input = 0.0 mV
0-15 2 gain= 4, input = –50 mV
0-15 3 gain= 8, input = –10.0 mV
0-15 4 gain= 16, input = –9 mV
0-15 5 gain= 32, input = 1.0 mV
0-15 6 gain= 64, input = –4.0 mV
0-15 7 gain= 128, input = –2.0 mV
0-15 8-15 not used
6 Gain Calibration by Channel 0-15 0 gain= 1, input = 320 mV
0-15 1 gain= 2, input = 320 mV
0-15 2 gain= 4, input = 110 mV
0-15 3 gain= 8, input = 70 mV
0-15 4 gain= 16, input = 29 mV
0-15 5 gain= 32, input = 19 mV
0-15 6 gain= 64, input = 4.0 mV
0-15 7 gain= 128, input = 2.0 mV
0-15 8-15 not used
36 (24) Calibration all Channels
General Calibration all Channels 0 0 zero offset and gain coefficients
0 1 channel internal current source and current sense
resistor, with 4-wire external 383Ω inputs
0 2 channel internal current source and current sense
resistor with 4-wire external 100Ω inputs
0 3 loop resistance compensation for 2 wire RTD
0 4 CJC calibration
0 5-15 not used
Offset Calibration all Channels 1 0 gain= 1, input = –320 mV
1 1 gain= 2, input = 0.0 mV
1 2 gain= 4, input = –50 mV
1 3 gain= 8, input = –10.0 mV
1 4 gain= 16, input = –9 mV
1 5 gain= 32, input = 1.0 mV
1 6 gain= 64, input = –4.0 mV