Toshiba TOSNUC 92 Connection Manual page 3

(4) RS232C user interface
To prevent damage of the control circuit at mounting/dismounting a connector, the
AC power switch on the peripheral equipment side should be of a type having
separate common wires. Also mount and dismount the connector with the AC
power turned off on the peripheral equipment side.
CNC system
Switch with separate common wires
Peripheral
equipment
– 3 –
AC power
supply
STE 73843