Star Micronics SP2000 ユーザーズマニュアル

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APPENDIX

The recommended drive unit is shown below.

Notes
•

Peripheral Units 1 and 2 cannot be driven simultaneously.

•

For continuous driving, do not use drive duty greater than 20%.

•

The status of the compulsion switch can be known from the following.
Star  mode

: The status of the compulsion switch can be known by using

the automatic status function or <ENQ> commands.  In the
case of ENQ status, bit 7 will be “1”when pin No. 6 of the
peripheral unit drive circuit is high (switch on).

ESC/POS  mode : The status of the compulsion switch can be known by using

the automatic status function, <DLE><EOT>n, and
<ESC>“u”n commands.

Parallel interface : The status of the compulsion switch can be known by pin

No. 34 on the parallel interface connector. When the
compulsion switch is on, pin No. 34 will be low.  This can
be checked by using the compatibility mode.

•

Minimum resistance for coils L1 and L2 is 24

Ω

.

•

Absolute maximum ratings for diodes D1 and D2 (Ta = 25

°

C) are:

Average Rectified Current Io = 1A
Maximum forward surge current (60Hz, 1-cycle sine wave) I

FSM

 = 40A

•

Absolute maximum rating for transistors TR1 and TR2 (Ta = 25

°

C) are:

Collector current Ic = 2A
Collector loss Pc = 1.2W

7824

F.G

TR1

M-GND

TR2

M-GND

TR3

+5V

+24V

R1

R2

6

5

4

3

2

1

L1

L2

R3
4.7k

Ω

1/4W

Frame
ground

Printer side

User side

D1

D2

Peripheral
unit 1

With shield

Peripheral
unit 2

Compulsion
switch