POSIFLEX Business Machines LCD Customer Display PD-7100 - Manual (Page 13)

3 - 6
1 –2 Short 2 –3 Short
JP2
-Busy status of PD sent
to host as CTS and
DSR at the same time
-Busy status of PD sent to host CTS,
handshaking signal of pass through device
goes to host as DSR directly (default)
Note: There must be the pass through serial output device on the pre-
mounted pass through terminator connected to RS232 Out
the 9 pin serial pass through port when JP2 is set to 2 –3
Short. Otherwise, the host computer may get a faulty
condition in an attempt to write to this serial port.
D. Serial Data and Self-test
Serial characters are received with data formatted as a 10-bit word. The
command set is structured to allow transmission of 8 data bits. The data rate is
default at 9600 baud per second and can be changed to 19200 baud per second as
described above. There is no parity bit and 1 stop bit. The level is RS-232C
start
bit
b0 b1 b2 b3 b4 b5 b6 b7 stop
bit
Self-test is a very useful feature and can be activated by sending 1F-40
(HEX). The test may be terminated by sending 1B-40 (HEX). The test sequence
is as follows
a.
Clear screen, Cursor home.
b.
Vertical scroll mode test, show product ID and version.
c.
For PD-7100/7200, it enters Overwrite mode and displays 20
characters of “A” followed by 20 characters of “B”.
For PD-7110/7210 and PD-7120/7220, it enters Horizontal scroll
mode test, and shows 20 CHINESE characters (addresses: B0A1,
B1A2, B2A3,
……, BEAF, BFB0, C0B1, ……, C3B4)
d.
For PD-7100/7200, it enters Horizontal Scroll mode after clearing
screen, then displays ASCII code font of current page from 21 to FF
(HEX).
For PD-7110/7210 and PD-7120/7220, it enters Wrap around mode
and shows ASCII code font from 21 to 7F (HEX).
e.
Go to step a and repeat the test