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MELSEC-Q
5 DATA USED FOR POSITIONING CONTROL
Default value Storage buffer memory address (common to axes 1 to 4)
0000
H
1287
15
1288
1289
1290
1291
14
1282
1283
1284
1285
1286
13
1277
1278
1279
1280
1281
12
1272
1273
1274
1275
1276
11
1267
1268
1269
1270
1271
10
1262
1263
1264
1265
1266
9
1257
1258
1259
1260
1261
8
1252
1253
1254
1255
1256
7
1247
1248
1249
1250
1251
6
1242
1243
1244
1245
1246
5
1237
1238
1239
1240
1241
4
1232
1233
1234
1235
1236
3
1227
1228
1229
1230
1231
2
1222
1223
1224
1225
1226
1
1217
1218
1219
1220
1221
Pointer No. 0
Pointer No.
Item
Buffer memory address
1212
1213
1214
1215
1216
Starting histroy
Md.3
Start information
Md.4
Start No.
1292
Md.8
Start history pointer
Md.5
Start hour
Md.6
Start min: sec
Md.7
Error judgement
Indicates a pointer No. that is next to the Pointer No.
assigned to the latest of the existing starting history records.
Each group of buffer memory addresses storing a complete starting history
record is assigned a pointer No.
Example: Pointer No. 0 = Buffer memory addresses 1212 to 1216
Pointer No. 1 = Buffer memory addresses 1217 to 1221
Pointer No. 2 = Buffer memory addresses 1222 to 1226
Pointer No. 15 = Buffer memory addresses 1287 to 1291
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.)
0 1292