4-2
Chapter 4. STANDARD BIT CODES AND STANDARD NUMERICAL CODES
Standard
bit code
Meaning of standard bit
1411 User defined bit 4
1412 User defined bit 5
1413 User defined bit 6
1414 User defined bit 7
1415 User defined bit 8
1440 Results of logical operation 1
1441 Results of logical operation 2
1442 Results of logical operation 3
1443 Results of logical operation 4
1444 Results of logical operation 5
1445 Results of logical operation 6
1446 Results of logical operation 7
1447 Results of logical operation 8
1448 Results of logical operation 9
1449 Results of logical operation 10
1450 Results of logical operation 11
1451 Results of logical operation 12
1452 Results of logical operation 13
1453 Results of logical operation 14
1454 Results of logical operation 15
1455 Results of logical operation 16
1504 Key status (auto/man)
1505 Key status (sp/ev)
1506 Key status (para)
1507 Key status (rsp/lsp)
1508 Key status (at)
1509 Key status (f1)
1510 Key status (f2)
1511 Key status (up)
1512 Key status (left)
1513 Key status (right)
1514 Key status (down)
1515 Key status (display)
1516 Key status (enter)
1545 Communication status (Normal
receipt on a byte basis)
1547 Communication status (Normal
transmission on a byte basis)
1548 Communication status (An error
received)
1549 Power failure detection
1568 RUN/READY status of loop 1
1569 RUN/READY status of loop 2
1584 AUTO/MANUAL status of loop 1
1585 AUTO/MANUAL status of loop 2
1600 AT stop /AT status of loop 1
1601 AT stop /AT status of loop 2
1616 LSP/RSP status of loop 1
1617 LSP/RSP status of loop 2
1648 During SP ramp of loop 1
(ramp-up)
1649 During SP ramp of loop 2
(ramp-up)
Standard
bit code
Meaning of standard bit
1664 During SP ramp of loop 1
(ramp-down)
1665 During SP ramp of loop 2
(ramp-down)
1696 Backup/through output status
of loop 1
1792 All typical alarms (logical OR of
all alarms to be displayed)
1824 PV input high limit alarm (PV1)
1825 PV input high limit alarm (PV2/
PV21)
1826 PV input high limit alarm (PV22)
1840 PV input low limit alarm (PV1)
1841 PV input low limit alarm (PV2/
PV21)
1842 PV input low limit alarm (PV22)
1856 CJ input alarm (PV1)
1857 CJ input alarm (PV2)
1880 MFB1 input error
1888 MFB1 estimation in progress
1896 MFB1 adjustment error
1952 CT1 input alarm
1953 CT2 input alarm
1968 Parameter failure
1969 Adjustment value failure (CPU
board)
1970 Adjustment value failure (PV
board)
1972 ROM failure (CPU board)
1973 ROM failure (PV board)
Only SDC45V/46V
Standard
bit code
Meaning of standard bit
1344
Input computation contact input (F01)
1345
Input computation contact input (F02)
1346
Input computation contact input (F03)
1347
Input computation contact input (F04)
1348
Input computation contact input (F05)
1349
Input computation contact input (F06)
1350
Input computation contact input (F07)
1351
Input computation contact input (F08)
1352
Input computation contact input (F09)
1353
Input computation contact input (F10)
1360
Input computation contact output (F01)
1361
Input computation contact output (F02)
1362
Input computation contact output (F03)
1363
Input computation contact output (F04)
1364
Input computation contact output (F05)
1365
Input computation contact output (F06)
1366
Input computation contact output (F07)
1367
Input computation contact output (F08)
1368
Input computation contact output (F09)
1369
Input computation contact output (F10)
1376
Output computation contact input (F01)
1377
Output computation contact input (F02)
1378
Output computation contact input (F03)
1379
Output computation contact input (F04)
1380
Output computation contact input (F05)
1381
Output computation contact input (F06)
1382
Output computation contact input (F07)
1383
Output computation contact input (F08)
1384
Output computation contact input (F09)
1385
Output computation contact input (F10)
1392
Output computation contact output (F01)
1393
Output computation contact output (F02)
1394
Output computation contact output (F03)
1395
Output computation contact output (F04)
1396
Output computation contact output (F05)
1397
Output computation contact output (F06)
1398
Output computation contact output (F07)
1399
Output computation contact output (F08)
1400
Output computation contact output (F09)
1401
Output computation contact output (F10)
1550 Hot start detection for loop 1 PID
1551 Hot start detection for loop 2 PID
1975 Battery voltage alarm
1976 RTC alarm
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