Star Micronics MP115MP-24G-A, MP111MP-24G-A Home Position Detector HP-sig Specifications

3.12 Home Position Detector (HP-sig) Specifications

The home position detector is composed of the mechanical switch. While the carriage is located at the left end, the switch remains ON.

R1	10 kΩ
R2	15 kΩ
C1	0.022 ∝ F

Fig. 3-21 Home position detector circuit (example)

In order to improve reliability, we recommend that the HP-sig is detected as described below.

(1)When the T1-sig is unstable when turning on the power, etc.

Detect the L level after having detected the H level of the HP-sig, and then, after having carried out 81 pulse counts for the T1-sig, detect the H level.

(2)When the T1-sig is decided during continuous operation of the motor

Detect the L level of the HP-sig, and then, after having counted 847 pulses of the T1-sig, detect the H level.

3.13 Paper-out Detector (PE-sig) Specifications

The Paper-out Detector is composed of a mechanical switch. While the paper is set in the paper tray, the switch remains ON.

R1	10 kΩ
R2	15 kΩ
C1	0.022 ∝ F

Fig. 3-22 Paper-out detector circuit (example)

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