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8.14 Fault
When WJ-PN detects a fault, WJ-PN stores the fault code into the fault buffer.
[The sequence to store the fault code into the fault buffer]
- The fault code is stored into PNU 947’s subindex that hasn’t still been stored from 0 to 7.
When subindex 0 - 7 have already been stored to, subindex 7 is overwritten.
- PNU 944 is increased by 1.
- ZSW1 bit3 is changed to ON.
[The sequence to acknowledge the fault buffer]
- When STW1 bit 7 is changed from OFF to ON and is ON for 20ms or more, to acknowledge the
fault buffer starts.
- The data of subindex 48 - 55 of PNU 947 are copied to subindex 56 - 63.
- The data of subindex 40 - 47 of PNU 947 are copied to subindex 48 - 55.
- The data of subindex 32 - 39 of PNU 947 are copied to subindex 40 - 47.
- The data of subindex 24 - 31 of PNU 947 are copied to subindex 32 - 39.
- The data of subindex 16 - 23 of PNU 947 are copied to subindex 24 - 31.
- The data of subindex 8 - 15 of PNU 947 are copied to subindex 16 - 23.
- The data of subindex 0 - 7 of PNU 947 are copied to subindex 8 - 15.
- 0 is stored into subindex 0 - 7 of PNU 947.
- PNU 952 is increased by 1.
- PNU 944 is increased by 1.
- If trip is occurred in WJ200 / WL200, trip reset is sent to WJ200 / WL200.
- ZSW1 bit3 is changed to OFF.
[The sequence to clear the fault buffer]
- When PNU952 is written 0, to clear the fault buffer starts.
- The data of all subindices of PNU 947 are cleared to 0.
- PNU 944 is changed to 0.
The fault codes are the following.
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