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Allocated CIO Area Words Section 3-2
3-2-9 Slave Status 1 (Word n+14)
Word n+14 [n = CIO 1,500 + (25 x unit number)]
Bit Name Status Controlled
by
Unit operation
00
to
01
Reserved by
system
--- --- ---
02 Remote I/O
Communica-
tions Error
Flag for
OUT 1/ IN 1
ON Unit Indicates that a communications error has occurred in the OUT 1/IN 1
slave I/O connection.
OFF Unit Indicates that a remote I/O communications error has not occurred or
turns OFF when a remote I/O communications error is cleared.
03 Remote I/O
Communica-
tions Error
Flag for
OUT 2/ IN 2
ON Unit Indicates that a communications error has occurred in the OUT 2/IN 2
Slave I/O connection.
OFF Unit Indicates that a remote I/O communications error has not occurred or
turns OFF when a remote I/O communications error is cleared.
04 Invalid
Setup Data
Flag
ON Unit Indicates that there is incorrect data in slave settings (mismatched check-
sum). The Unit stops slave communications. (Remote I/O communica-
tions and message communications continue.)
OFF Unit Indicates that a Unit is operating with the correct slave setup data or with-
out slave communications being set.
Turns OFF when the slave is properly set after a slave setup data error
occurs.
05 Remote I/O
Refresh
Error
ON Unit Indicates that the I/O memory in the CPU Unit that is to be refreshed is not
present during I/O refreshing for the slave function. It occurs in several sit-
uations, such as when an I/O area is allocated in a EM bank that is not
present.
OFF Unit Indicates that a slave I/O refresh error has not occurred.
06
to
07
Reserved by
system
--- --- ---
08 Slave
Function
Enable/
Disable
Failed Flag
ON Unit Indicates that an error has occurred in one of the following operations:
• Slave function enabled (word n+1, bit 06)
• Slave function disabled (word n+1, bit 07)
Once this bit turns ON, it will remain ON until the operation is successfully
completed.
OFF Unit Indicates that the error has not occurred. The bit turns OFF when the
operation is successfully completed.
09 User
Allocation
Area Setting
Failed Flag
ON Unit Indicates that an error has occurred in the following operation:
• Slave user-set allocations user setting (word n+1, bit 11)
Once this bit turns ON, it will remain ON until the operation is successfully
completed.
OFF Unit Indicates that the error has not occurred. The bit turns OFF when the
operation is successfully completed.
10 Fixed
Allocation
Area Setting
Failed Flag
ON Unit Indicates that an error has occurred in one of the following operations:
• Slave Fixed Allocation Setting 1 (word n+1, bit 08)
• Slave Fixed Allocation Setting 2 (word n+1, bit 09)
• Slave Fixed Allocation Setting 3 (word n+1, bit 10)
Once this bit turns ON, it will remain ON until the operation is successfully
completed.
OFF Unit Indicates that the error has not occurred. The bit turns OFF when the
operation is successfully completed.