Schweitzer Engineering Laboratories SEL-751 - Page 740

E.26
SEL-751 Relay Instruction Manual Date Code 20170927
Modbus RTU Communications
Communications Protocol
Reset Settings
261 (R/W) RESET DATA 0 2047 0 0 361
Bit 0 = TRIP (TARGET) RESET
Bit 1 = Reserved
Bit 2 = RESET STAT DATA
Bit 3 = RESET HIST DATA
Bit 4 = RESET COMM CNTR
Bit 5 = Reserved
Bit 6 = RST ENRGY DATA
Bit 7 = RST MX/MN DATA
Bit 8 = RST DEMAND
Bit 9 = RST PEAK DEMAND
Bit 10 = RST BKMON DATA
Bits 11–15 = Reserved
262–269 (R) Reserved
c
362–369
Date/Time Set
270 (R/W) SET SEC 0 5999 0 0 370
271 (R/W) SET MIN 0 59 0 0 371
272 (R/W) SET HOUR 0 23 0 0 372
273 (R/W) SET DAY 1 31 1 0 373
274 (R/W) SET MONTH 1 12 1 0 374
275 (R/W) SET YEAR 2000 9999 2000 0 375
276–279 (R) Reserved
c
376–379
Device Status 0 = OK 1 = WARN 2 = FAIL
280 (R) FPGA STATUS 0 2 0 1 380
281 (R) GPSB STATUS 0 2 0 1 381
282 (R) HMI STATUS 0 2 0 1 382
283 (R) RAM STATUS 0 2 0 1 383
284 (R) ROM STATUS 0 2 0 1 384
285 (R) CR_RAM STATUS 0 2 0 1 385
286 (R) NON_VOL STATUS 0 2 0 1 386
287 (R) CLOCK STATUS 0 2 0 1 387
288 (R) CID FILE STATUS 0 2 0 1 388
289 (R) RTD STATUS 0 2 0 1 389
290 (R) +0.9V STATUS 0 2 0 1 390
291 (R) +1.2V STATUS 0 2 0 1 391
292 (R) +1.5V STATUS 0 2 0 1 392
293 (R) +1.8V STATUS 0 2 0 1 393
294 (R) +2.5V STATUS 0 2 0 1 394
295 (R) +3.3V STATUS 0 2 0 1 395
296 (R) +3.75V STATUS 0 2 0 1 396
297 (R) +5.0V STATUS 0 2 0 1 397
298 (R) -1.25V STATUS 0 2 0 1 398
299 (R) -5.0V STATUS 0 2 0 1 399
300 (R) CLK_BAT STATUS 0 2 0 1 400
301 (R) CARD C STATUS 0 2 0 1 401
302 (R) CARD D STATUS 0 2 0 1 402
Table E.34 Modbus Register Map
a
(Sheet 2 of 38)
Modbus Register
Address
b
Name/Enums Units Min Max Default
Scale
Fac to r
DeviceNet
Parameter
Numbers