
B-63983EN/02 4.LADDER LANGUAGE
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End of transfer (W1)
This indicates end of transfer of external data. This transfer end
condition shows the end of a series of external data input sequence.
This functional instruction executes a series of transfer sequence, and
finally sets ESTB = 0 in the PMC → NC interface. As a result, W1 is
set to 1 (W1 = 1) after confirming that EREND = 0.
When W1 = 1, transfer of data is over. Reset ACT now.
CAUTION
1 The EXIN command cannot input multiple external
data items at the same time. Be sure to issue the
next EXIN command (ACT = 1) after external data
transfer ends (W1 = 1).
2 Be sure to specify an interlock when the external
data input function is used by commands other than
the function command EXIN.
3 When an external program number search, one of
the external data input functions, is executed, the
end of data transfer (W1 = 1) means that the search
command has been accepted. Note that this does
not mean the completion of the program search. To
confirm the completion of the program search, check
the search completion signal (ESEND = 1) after the
data transfer ends (W1 = 1).
Operation output register
If any of the following errors occurs during external data input, the bit
in the operation output register is set. In this case, external data transfer
ends (W1 = 1).
EXIN error
R9000
7654 321 0
(Description of errors)
• When the EXIN command (ACT = 1) is started, the strobe
signal (ESTB) or EREND signal is already on. The external
data may be input by commands other than the function
command EXIN.
Notes when this functional instruction is used in subroutine
See Subsection 1.4.4.3 for details.