ABB 266 MODBUS - Page 101

Appendix C MODBUS® register lists
266 MODBUS® multivariable transmitter User manual 2105216 Rev. AB | 93
Register Address
Type
*Constant /
Default
Object description
32 bit
16 bit
* Means these are ROM constant defaults and a read will always return these values.
7060
60
U8
†
Differential Pressure units select code
1 inch of water at 60 °F (ROM default)
2 Pascal
3 Kilopascals
6 inches of water at 68 °F
7061
61
U8
†
Static Pressure units select code
3 Kilopascal
4 Megapascal
5 PSIA (ROM default)
7062
62
U8
†
Temperature units select code
20 Degree Celsius
21 Degree Fahrenheit (ROM default)
7131
131
U8
Modbus turn-around response delay (ms per count)
† Value selected using HMI must equal one of these specific measurement units, or a NAK will be returned.
7401
401 – 402
F
Differential Pressure (Damping, Calibration and Units applied) floating point, 401 is
high word, 402 is low word.
7402
403 – 404
F
Static Pressure (Damping, Calibration and Units applied) floating point, 401 is high
word, 402 is low word.
7403
405 – 406
F
Process Temperature (Damping, Calibration and Units applied) floating point, 401 is
high word, 402 is low word.
This may be external RTD or sensor value depending on configuration.
7404
407 – 408
U32
Diagnostics Status Word 1 and 2
7405
409 – 410
U32
Diagnostics Status Word 3 and 4
7406
411 – 412
U32
Diagnostics Status Word 5 and 6
7407
413 – 414
F
DP URL, Upper Range Limit (Set by Measurement Sensor)
7408
415 – 416
F
DP LRL, Lower Range Limit (Set by Measurement Sensor)
7409
417 – 418
F
DP URV, Operating Upper Range Value (default URL)
7410
419 – 420
F
DP LRV, Operating Lower Range Value (default LRL)
7411
421 – 422
F
SP URL, Upper Range Limit (Set by Measurement Sensor)
7412
423 – 424
F
SP LRL, Lower Range Limit (Set by Measurement Sensor)
7413
425 – 426
F
SP URV, Operating Upper Limit (default SP URL)
7414
427 – 428
F
SP LRV, Operating Lower Limit (default SP LRL)
7415
429 – 430
F
T URL, Upper Range Limit (default 850ºC)
7416
431 – 432
F
T LRL, Lower Range Limit(default -200ºC)
7417
433 – 434
F
T URV, Operating Upper Range Value (default URL)
7418
435 – 436
F
T LRV, Operating Lower Range Value (default LRL)
7419
437 – 438
F
DP offset calibration value (default 0.0)
7420
439 – 440
F
DP span calibration value ( default URL)
7421
441 – 442
F
DP damping (default 0.0)
7422
443 – 444
F
SP offset calibration value (default 0.0)
7423
445 – 446
F
SP span calibration value ( default URL)
7424
447 – 448
F
SP damping (default 0.0)
7425
449 – 450
F
T offset calibration value (default 0.0)
7426
451 – 452
F
T span calibration value (default URL)
7427
453 – 454
F
T dampening (default 0.0)