7. CONNECTION TO CNC PERIPHERALS
High–speed DI Signal Receiver Input Signal Standard
Absolute maximum rating
Input voltage range Vin: –3.6 V to +13.6 V
Item Symbol Standard Unit Description
High–level input voltage VH 3.6 to 11.6 V
Low–level input voltage VL 0 to 1.0 V
0.5 max. mA V
9.3 max. mA V
Low–level input current Iil –8.0 max. mA V
1 Symbols lih and lil shows the signal flow direction, + signals
flow into the receiver, and – signals flow out of the receiver.
2 When the input voltage is low level, high–speed skip signals
are regarded as logic “1”, and when the input voltage is high
level, the signals are regarded as logic “0”.