Renu Electronics FlexiLogics series - Page 124

Troubleshooting
124
Doc No: UMAN\FL\0110
Rev. No.: 1.02B
No Device/register Name Function
1 MW01_0 CPU error (down) ON at error state
2 MW01_1 I/O error ON at error state
3 MW01_2 Program error ON at error state
4 MW01_5 Clock/calendar error(alarm) ON when clock/calendar data is illegal
5 MW01_6 Retentive data loss/invalid(alarm) ON when retentive data in RAM are invalid
6 MW01_11 System Watchdog error (down) ON at error state
7 MW01_13 I/O mismatch (down) ON at error state
8 MW01_14 Analog Power Fail ON at error state
9 MW01_15 I/O BCC error (down) ON at error state
10 MW02_1 Scan time over (alarm) ON when the scan time exceeds 200 ms
ROM Errors:
If the PLC does not have a program ( Firmware / Application / Ladder ) it remains in the wait loop as given in the Flow
Chart. The LEDs are used to indicate these conditions. These errors are not logged in the event history.
No Condition Indication
1 No Firmware or Firmware corrupted. RUN LED and ERR LED blinks at one second interval
simultaneously.
2 No Application or Application corrupted. ERR LED blinks at one second interval.
3 No Ladder or Ladder corrupted. ERR LED blinks at one second interval.
Diagnosis Registers for Serial and Ethernet Communication channels:
Following system registers and system coils can be used for the control and diagnosis of communication channels:
Register / Coil Tag Name Read / Write Description
SW0003_14 COM1 Status Read only 0 = Communication Error
1= Communicating with Master
SW0003_15 COM2 Status Read only 0 = Communication Error
1= Communicating with Master
SW0003_13 COM3 Status Read only 0 = Communication Error
1= Communicating with Master
SW0018 COM1 failed node Read/write Shows time in sec recover the communication
reconnect time (Sec) with failed nodes for port1.the default value is
60Sec
SW0019 COM2 failed node Read/write Shows time in sec recover the communication
reconnect time (Sec) with failed nodes for port1.the default value is
60Sec
SW0022 COM3 failed node Read/Write Shows time in sec recover the communication
reconnect time (Sec) with failed nodes for port3.the default value is
60Sec
S0021 COM1 failed node Read/write If this bit is set communication with the failed
reconnect control nodes is detected after scan time SW0018 for
port1.By default : ON