Star Micronics MP111MP-24G-A - Manual (Page 26)

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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 k
Ω
R2 15 k
Ω
C1 0.022
µ
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 k
Ω
R2 15 k
Ω
C1 0.022
µ
F
Fig. 3-22 Paper-out detector circuit (example)