3 Memory Allocations
3 - 4
CJ-series EtherCAT Slave Units Operation Manual (W541)
This section provides the details of the allocated CIO area words.
3-2-2 Details of the Allocated CIO Area Words
Unit Status 1 (n+10)
Bit Name Manipulated by Unit operation
0Unit Error Unit ON:
Displays EtherCAT Slave Unit operating errors
Unit Error turns ON if any bit from 01 to 15 in Unit Status 1
is ON (OR information of bits 01 to 15).
OFF:
Indicates that the error did not occur or turns OFF when the
error is cleared.
Default: OFF
1 to 2 Reserved --- ---
3 Slave Function Error Unit ON:
Indicates that at least one slave error occurred. Refer to
Slave Status 1.
The slave errors are as follows:
• Slave AL Status Error
• SII Unit Verification Error
• Verification Error
• Mailbox Setting Error
• I/O Communication Error
• Illegal State Transition Request Received
• I/O Refresh Error
OFF:
Indicates that none of the above errors occurred or turns
OFF when all of above errors are cleared.
Default: OFF
This bit cannot be turned OFF unless the error is recovered
from the EtherCAT master.
Unit Error
Slave Function Error
14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
n + 10
Unit Memory Error
ESC Error
15
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