Epson ColorWorks CW-C6500A Technical Reference Guide - External I/O CW-C6000/C - Page 57

I/O power supply/SG separated Printer side +5 V CN200 VCC_EX 1 2 3 NON CONNECTION CN100 1 2 3 NON CONNECTION FG SG Chapter 7 Appendix External device side SG I/O signal specifications when I/O power supply and SG are separated Input/Output Input signal to the printer Output signal from printer Item Value Type of output port on the Open drain or open collector output external device E x t e r n a l i n p u t v o l t a g e 5 - 15 V (VCC_EX) range Low level VIL_max. 0.8 V Sink current Min. 2 mA Max. 15 mA *1 High level Sink current (leakage current) Max. 10 uA Type of output port on the Open collector output (pull-up resistor is on the printer printer) E x t e r n a l i n p u t v o l t a g e 5 - 15 V (VCC_EX) range Low level High level VOL_max. VCC_EX x 0.2 V Allowable sink current Max. 1.8 mA *2 VOH_min. VCC_EX x 0.8 V *3 ∗1 The sink current is limited by the current limiting resistance (R = 1 kΩ). ∗2 Do not use this as a drive for a high-current load such as a coil. ∗3 This depends on the pull-up resistance (Rpu = 10k ohm) of the printer and the input resistance of the external device. 57