Schweitzer Engineering Laboratories SEL-751 - Page 743

E.29
Date Code 20170927 Instruction Manual SEL-751 Relay
Modbus RTU Communications
Communications Protocol
393 (R) LAST RST DATE-dd 1 31 1 1 493
394 (R) LAST RST DATE-mm 1 12 1 1 494
395 (R) LAST RST DATE-yy 2000 9999 2000 1 495
396–399 (R) Reserved
c
496–499
RTD Data
400 (R) MAX WINDING RTD °C -32768 32767 0 1 500
7FFFh = Open
8000h = Short
7FFCh = Comm Fail
7FF8h = Stat Fail
7FFEh = Fail
7FF0h = NA
401 (R) MAX BEARING RTD
°C -32768 32767 0 1 501
402 (R) MAX AMBIENT RTD
°C -32768 32767 0 1 502
403 (R) MAX OTHER RTD °C -32768 32767 0 1 503
404 (R) RTD1
°C -32768 32767 0 1 504
405 (R) RTD2 °C -32768 32767 0 1 505
406 (R) RTD3
°C -32768 32767 0 1 506
407 (R) RTD4 °C -32768 32767 0 1 507
408 (R) RTD5
°C -32768 32767 0 1 508
409 (R) RTD6 °C -32768 32767 0 1 509
410 (R) RTD7
°C -32768 32767 0 1 510
411 (R) RTD8 °C -32768 32767 0 1 511
412 (R) RTD9
°C -32768 32767 0 1 512
413 (R) RTD10 °C -32768 32767 0 1 513
414 (R) RTD11
°C -32768 32767 0 1 514
415 (R) RTD12 °C -32768 32767 0 1 515
416–419 (R) Reserved
c
516–519
Light Meter Data
420 (R) LS 1 % 0 1000 0 0.1 520
421 (R) LS 2 % 0 1000 0 0.1 521
422 (R) LS 3 % 0 1000 0 0.1 522
423 (R) LS 4 % 0 1000 0 0.1 523
424 (R) LS 5 % 0 1000 0 0.1 524
425 (R) LS 6 % 0 1000 0 0.1 525
426 (R) LS 7 % 0 1000 0 0.1 526
427 (R) LS 8 % 0 1000 0 0.1 527
428–429 (R) Reserved
c
528–529
RMS Data
430 (R) IA RMS A 0 65535 0 1 530
431 (R) IB RMS A 0 65535 0 1 531
432 (R) IC RMS A 0 65535 0 1 532
433 (R) IN RMS A 0 65535 0 1 533
434 (R) VA RMS kV 0 65535 0 0.01 534
435 (R) VB RMS kV 0 65535 0 0.01 535
436 (R) VC RMS kV 0 65535 0 0.01 536
437 (R) VAB RMS kV 0 65535 0 0.01 537
Table E.34 Modbus Register Map
a
(Sheet 5 of 38)
Modbus Register
Address
b
Name/Enums Units Min Max Default
Scale
Fac to r
DeviceNet
Parameter
Numbers