AH500 Programming Manual SR310: The PLC status change log pointer points to the latest PLC status change log. When the PLC status is changed once, the value of the PLC status change log pointer increases by one. The range of pointer values is 0~19. For example, the PLC status change log pointer points to the fourth PLC status change log when the value in SR310 is 3. The time when the PLC status change actions occur is recorded in SR311~SR390. The corresponding functions of these data registers are as follows. 2-88 PLC status change Number The PLC is supplied with power. 1 The PLC is disconnected. 2 The PLC starts to run. 3 The PLC stops running. 4 Default setting of the PLC (1.
RST button; 2.
Communication command) 5 Pressing the CLR button on the PLC (Clearing the data in the latched device) 6 Action *Time when the PLC status change action occurs Number number Year Month Day Hour Minute Second SR311 SR312 High byte SR312 Low byte SR313 High byte SR313 Low byte SR314 High byte SR314 Low byte 1 SR315 SR316 High byte SR316 Low byte SR317 High byte SR317 Low byte SR318 High byte SR318 Low byte 2 SR319 SR320 High byte SR320 Low byte SR321 High byte SR321 Low byte SR322 High byte SR322 Low byte 3 SR323 SR324 High byte SR324 Low byte SR325 High byte SR325 Low byte SR326 High byte SR326 Low byte 4 SR327 SR328 High byte SR328 Low byte SR329 High byte SR329 Low byte SR330 High byte SR330 Low byte 5 SR331 SR332 High byte SR332 Low byte SR333 High byte SR333 Low byte SR334 High byte SR334 Low byte 6 SR335 SR336 High byte SR336 Low byte SR337 High byte SR337 Low byte SR338 High byte SR338 Low byte 7 SR339 SR340 High byte SR340 Low byte SR341 High byte SR341 Low byte SR342 High byte SR342 Low byte 8 SR343 SR344 High byte SR344 Low byte SR345 High byte SR345 Low byte SR346 High byte SR346 Low byte 9 SR347 SR348 High byte SR348 Low byte SR349 High byte SR349 Low byte SR350 High byte SR350 Low byte 10 SR351 SR352 High byte SR352 Low byte SR353 High byte SR353 Low byte SR354 High byte SR354 Low byte 11 SR355 SR356 High byte SR356 Low byte SR357 High byte SR357 Low byte SR358 High byte SR358 Low byte 12 SR359 SR360 High byte SR360 Low byte SR361 High byte SR361 Low byte SR362 High byte SR362 Low byte 13 SR363 SR364 High byte SR364 Low byte SR365 High byte SR365 Low byte SR366 High byte SR366 Low byte 14 SR367 SR368 High byte SR368 Low byte SR369 High byte SR369 Low byte SR370 High byte SR370 Low byte 15 SR371 SR372 High byte SR372 Low byte SR373 High byte SR373 Low byte SR374 High byte SR374 Low byte 16 SR375 SR376 High byte SR376 Low byte SR377 High byte SR377 Low byte SR378 High byte SR378 Low byte 17 SR379 SR380 High byte SR380 Low byte SR381 High byte SR381 Low byte SR382 High byte SR382 Low byte 18