![]() If this signal is set low the NC will stop sending data after two more characters are sent. Clear To Send: When this signal and the DSR signal are set high, the NC can send data from SD. 777 Walkers Line, Burlington, Ontario Canada L7N 2G1 Fanuc Serial (RS232) Communications Information Contents Signal Description Fanuc Serial Cable Information Timing Chart When The Fanuc NC Receives Data Into Memory Timing Chart When The Fanuc NC Sends Data To External Device ISO Tape Code Chart EIA Tape Code Chart Common Fanuc Serial Alarms of 9ΔΆ Fanuc DB25 Signal Description Signal Name Pin # I/O Description SD 2 O Sending Data (Tx) RD 3 I Receiving Data (Rx) RTS 4 O CTS 5 I DSR 6 I SG 7 - Signal Ground CD 8 I DTR 20 O PWR 25 O FG 1 - Request To Send: This Signal is set to on when the NC starts sending data and is turned off when the transmission ends.
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