109
CHAPTER 11 DATA COMMUNICATIONS USING THE PREDEFINED PROTOCOL
11
11.4 Execution Condition of Predefined Protocol Communication
(b) If an error has occurred in the protocol setting data
(2) When the protocol setting data is written
When the protocol setting data writing from GX Works2 is completed, Predefined protocol ready (X1D) turns off.
After the completion, the E71 checks the protocol setting data. If the protocol setting data is set correctly, the E71
turns on Predefined protocol ready (X1D).
If an error has occurred in the protocol setting data, Predefined protocol ready (X1D) stays off and the error
details are stored to the protocol setting data check area (address: 5320
H
to 533F
H
).
(a) If the protocol setting data is set correctly
E71
Predefined protocol ready
(X1D)
Protocol setting data
check area
(address: 5320
H
to 533F
H
)
Checking the
protocol setting data
Power on/reset
The error details are stored.
Check result error
X1D stays off.
Start to write
the protocol setting data.
E71
Predefined protocol ready
(X1D)
Protocol setting data
check area
(address: 5320
H
to 533F
H
)
Checking the protocol
setting data
X1D turns on when the
check result is normal.
The number of registered protocols and
information about whether protocols have
been registered are stored.
Check result normal
Writing the protocol
setting data
X1D turns off.
X1D turns on when the
protocol setting data has been
set correctly before data write.
X1D turns off if no protocol setting data
has been set or an error has occurred in
the protocol setting data before data write.
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