Mitsubishi Electric MELSEC-LD77MS2 User Manual page 261

Default value
Each history record is assigned a pointer No. in the range between 0 and 15.
If the pointer No. 15 has been assigned to a new record, the next record will be assigned the pointer number 0.
(A new record replaces an older record when a pointer No. is reassigned.)
LD77MS2/LD77MS4
0
Md.13
Error history pointer
Indicates a pointer No. that is next to the pointer No. assigned to the latest of the existing error history records.
Pointer No.
Md.9
Axis in which the
error occurred
0
Md.10
Axis error No.
Md.57
Servo alarm
Md.61
Driver operation
alarm number
Md.55
Axis error occurrence
0000H
(Year: month)
Md.11
Axis error occurrence
(Day: hour)
Md.12
Axis error occurrence
(Minute: second)
Each group of buffer memory addresses storing a complete error history record is assigned a pointer No.
Example: Pointer No. 0 = Buffer memory addresses 1293 to 1296, 1456, 31300
Pointer No. 1 = Buffer memory addresses 1297 to 1300, 1457, 31301
0000H
Pointer No. 15 = Buffer memory addresses 1353 to 1356, 1471, 31315
LD77MS16
Md.13
Error history pointer
Indicates a pointer No. that is next to the pointer No. assigned to the latest of the existing error history records.
Pointer No.
0000H
Md.9
Axis in which the
error occurred
Md.10
Axis error No.
Md.57
Servo alarm
0000H
Md.61
Driver operation
alarm number
Md.55
Axis error occurrence
(Year: month)
Md.11
Axis error occurrence
0000H
(Day: hour)
Md.12
Axis error occurrence
(Minute: second)
Each group of buffer memory addresses storing a complete error history record is assigned a pointer No.
Example: Pointer No. 0 = Buffer memory addresses 4093 to 4096, 4256, 31300
0
Pointer No. 1 = Buffer memory addresses 4097 to 4100, 4257, 31301
Pointer No. 15 = Buffer memory addresses 4153 to 4156, 4271, 31315
Buffer memory address (common for all axes)
LD77MS2/LD77MS4
1357
0 1 2 3
1293 1297 1301 1305
1294 1298 1302 1306
31300 31301 31302 31303 31304 31305 31306 31307 31308 31309 31310 31311 31312 31313 31314 31315
31333 31334 31335 31336 31337 31338 31339 31340 31341 31342 31343 31344 31345 31346 31347 31348
1456 1457 1458 1459
1295 1299 1303 1307
1296 1300 1304 1308
4157
0 1 2 3
4093 4097 4101 4105
4094 4098 4102 4106
31300 31301 31302 31303 31304 31305 31306 31307 31308 31309 31310 31311 31312 31313 31314 31315
31333 31334 31335 31336 31337 31338 31339 31340 31341 31342 31343 31344 31345 31346 31347 31348
4256 4257 4258 4259
4095 4099 4103 4107
4096 4100 4104 4108
5 - 121
Chapter 5 Data Used for Positioning Control
4 5 6 7 8 9
1309 1313 1317 1321 1325 1329
1310 1314 1318 1322 1326 1330
1460 1461 1462 1463 1464 1465
1311 1315 1319 1323 1327 1331
1312 1316 1320 1324 1328 1332
4 5 6 7 8 9
4109 4113 4117 4121 4125 4129
4110 4114 4118 4122 4126 4130
4260 4261 4262 4263 4264 4265
4111 4115 4119 4123 4127 4131
4112 4116 4120 4124 4128 4132
LD77MS16
10 11 12 13 14 15
1333 1337 1341 1345 1349 1353
1334 1338 1342 1346 1350 1354
1466 1467 1468 1469 1470 1471
1335 1339 1343 1347 1351 1355
1336 1340 1344 1348 1352 1356
10 11 12 13 14 15
4133 4137 4141 4145 4149 4153
4134 4138 4142 4146 4150 4154
4266 4267 4268 4269 4270 4271
4135 4139 4143 4147 4151 4155
4136 4140 4144 4148 4152 4156