
B-63943EN/02 5.CONNECTION TO CNC PERIPHERALS
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Time chart when the NC send data (Punch out)
(1) NC output DC2.
(2) NC outputs punch data in succession.
(3) When data processing is delayed at the I/O device.
(a) Data output stops within two characters including a
currently transmitting character when CS signal is turned
off.
When CS signal is turned on again, data transmission starts.
(See Fig. 5.3.4 (b))
(b) If control code DC3 is input to NC, NC stops data output
within ten characters. When control code DC1 is input to
NC, NC starts sending data again. (See Fig. 5.3.4 (c))
(4) The NC starts sending the next data if the CS signal is turned on
after the I/O device completes data processing.
(5) The NC issues DC4 upon completing data output.
10ms or longer 100ms or longer
DC4 DC2
1ms or longer Within 2 characters
ER (output)
RS (output)
SD (output)
RD (input)
CS (input)
Fig. 5.3.4 (c)
1ms or longer
10ms or longer 100ms or longer
DC4 DC2
ER (output)
RS (output)
SD (output)
Within 2 characters
RD (input)
DR (input)
CS (input)
DC3 DC1
Fig. 5.3.4 (c)