4-3-7
Handling of Abnormalities
When a slave station detects a communication load that exceeds the limit, it is solved from CC-Link IEF Basic commun
ication.
If an error occurs in the CC Link IEF Basic communication, the error occurrence flag is turned on. Also abnormal
Error information details are stored in the code. The master station is notified of an error in the response message from
the slave station
⇒
master station. When a fatal error occurs in the CPU system and communication is impossible, it i
s solved from CC-Link IEF Basic communication.
Contents of detection
Behavior
Detection
Timing
CPU
Worki
ng
Abnormal
ity
Relay
Error-code
Storage-register
5 to 6 stations designated by the master
station as the number of occupied stati
ons that cannot be handled by the slave
station
Communication not established
At all times
Contin
ue
SP253
R7730
The number of occupied stations that ca
nnot be handled by slave stations is 7 t
o 16 stations designated by master stati
ons.
Untreated
Received data is discarded.
At all times
Contin
ue
-
-
It cannot be executed because it has alr
eady been controlled by other master st
ations. (Duplicate master stations)
Only communication with the mas
ter station sent later has not been
established.
To continue communication with t
he master station that was original
ly sent
At all times
Contin
ue
SP253
R7730
The request for cyclic transmission statu
s ON was received (slave station duplic
ation) with the master station not deter
mined.
Communication not established
At all times
Contin
ue
SP253
R7730
Setting out of setting range
Communication not established
At all times
Contin
ue
SP253
R7730
Communication load exceeding the limit
was detected from the master station
(high load condition)
Communication established/not est
ablished
At all times
Contin
ue
SP253
R7730
The number of occupied stations specifi
ed by the master station and the numbe
r of occupied stations set by the slave s
tation are inconsistent (when the numbe
r of occupied stations is 1 to 4)
Establishing communication
At all times
Contin
ue
SP253
R7730
Exceptions occurred in the CC-Link IEF
Basic communication process.
Communication established/not est
ablished
At all times
Contin
ue
SP253
R7730
Summary of Contents for Kostac SJ-Ether Series
Page 1: ...English version of the KOSTAC SJ Ether series user s manual SJ ETHER USER M...
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Page 13: ...1...
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Page 113: ...3 24 Note Refer to 6 3 3 Module Assembly for connections and locks between modules...
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Page 156: ...flashing OFF Not sent H W RX Green flashing Receiving H W OFF Not received H W...
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Page 310: ...Chapter 7 Maintenance...
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