Specification For I/O Signals - Epson CW-C6000 Series Technical Reference Manual

Specification for I/O Signals

This section describes the I/O signal specifications.
Input/Output
Input signal to the printer
Output signal from printer
∗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.
CAUTION
Example input signal circuit
Item
Type of output port on the
external device
Low level
High level
Type of output port on the
printer
Low level
High level
Regardless of whether an external device is connected or the connected external device is
turned on or off, when the printer is turned on, the power supply voltage and signal are output
from the I/O power supply pin and output signal pin of the external I/O connector. Connect an
external device under this assumption.
+5 V
Printer side
R
Printer input
SG FG
Chapter 2 External I/O Specification
Value
Open drain or open collector output
VIL_max. 0.8 V
Sink current Min. 2 mA
*1
Max. 7 mA
Sink current (leakage current) Max. 10 uA
Open collector output (pull-up resistor is on the
printer)
VOL_max. 0.8 V
Allowable sink current Max. 1.8 mA
*3
VOH_min. 4.0 V
External device side
External device
output
SG
2
*2
15