Chapter 2 Devices *Time when the download action occurs: The data is stored as the values in the binary-coded decimal. The range of values is as follows. 8. The PLC status change log SR309~SR390 SR309: The maximum number of PLC status change logs which are stored in SR309 is 20. Every PLC status change log occupies 4 registers. The PLC status change actions which are recorded are numbered, as shown in the following table.
2-87 Action *Time when the download action occurs Number number Year Month Day Hour Minute Second SR249 SR250 High byte SR250 Low byte SR251 High byte SR251 Low byte SR252 High byte SR252 Low byte 6 SR253 SR254 High byte SR254 Low byte SR255 High byte SR255 Low byte SR256 High byte SR256 Low byte 7 SR257 SR258 High byte SR258 Low byte SR259 High byte SR259 Low byte SR260 High byte SR260 Low byte 8 SR261 SR262 High byte SR262 Low byte SR263 High byte SR263 Low byte SR264 High byte SR264 Low byte 9 10 SR265 SR266 High byte SR266 Low byte SR267 High byte SR267 Low byte SR268 High byte SR268 Low byte SR269 SR270 High byte SR270 Low byte SR271 High byte SR271 Low byte SR272 High byte SR272 Low byte 11 SR273 SR274 High byte SR274 Low byte SR275 High byte SR275 Low byte SR276 High byte SR276 Low byte 12 SR277 SR278 High byte SR278 Low byte SR279 High byte SR279 Low byte SR280 High byte SR280 Low byte 13 SR281 SR282 High byte SR282 Low byte SR283 High byte SR283 Low byte SR284 High byte SR284 Low byte 14 SR285 SR286 High byte SR286 Low byte SR287 High byte SR287 Low byte SR288 High byte SR288 Low byte 15 SR289 SR290 High byte SR290 Low byte SR291 High byte SR291 Low byte SR292 High byte SR292 Low byte 16 SR293 SR294 High byte SR294 Low byte SR295 High byte SR295 Low byte SR296 High byte SR296 Low byte 17 SR297 SR298 High byte SR298 Low byte SR299 High byte SR299 Low byte SR300 High byte SR300 Low byte 18 SR301 SR302 High byte SR302 Low byte SR303 High byte SR303 Low byte SR304 High byte SR304 Low byte 19 SR305 SR306 High byte SR306 Low byte SR307 High byte SR307 Low byte SR308 High byte SR308 Low byte 20 Function Value Year 00~99 (A.D.) Month 01~12 Day 01~31 Hour 00~23 Minute 00~59 Second 00~59