Denso RC5 - Manual (Page 70)

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[ 3 ] Command Processing Complete (Output)
(1) Function
The signal outputs to the external device that I/O command processing is
completed.
(2) Terminal number
No. 15 of connector CN10.
(3) Usage
The signal is used to confirm that I/O command processing is complete, or
as a timing signal for obtaining the result of I/O command processing.
(4) ON conditions
 The signal will be turned ON upon completion of processing the I/O
command given and determination of outputting the status area.
‚ If an error occurs as a result of executing an I/O command, the result
will not be output to the status area, but the robot failure signal and the
command processing complete signal will be turned simultaneously
ON.
(5) OFF conditions
 The signal will be turned OFF when the strobe signal is turned OFF.
‚ If the strobe signal is turned OFF, before command processing is
completed, the command processing complete signal will be output and
then turned OFF within 100 msec.