20190905
5
4. Pin Assignment
DC power jack
5. Operations
Fat820w always creates a
server
and waiting for PC or other device building connection with TCP port
(factory default is
1001
). And fat820w also provide a
client
by Paragraph
6-O
command, trying to connect
with server provide by host every 30 seconds.
When you start up FAT820W, FAT820W will set the boot-up status from memory (EEPROM). Then sound
a beep and LCD shows the start-up page. After that, FAT820W will stay at stand-by state. You can give a
command to FAT820W. For example, show a message to direct customer to do some action (refer to Paragraph
6-B
command). You can also blink the LCD by Paragraph
6-I
command to attract the customer attention.
You can press any key in the keypad. Please make sure keypad is enabled. If keypad is at “disable”, keypad
doesn’t work. The power-up state is at “enable”. When you press the first key, the screen on LCD will be
cleared, and the key will be shown on the left-top side. Following key-in will be left-to-right top-to-bottom
showing on LCD by sequence. The key-in digits are 32 maximum. It will be ignored, if key-in digits over 32
maximum.
If LCD always show asterisk sign(*) when you press key. It means FAT820W is on “asterisk” displaying
type. In fact, asterisk sign is just only for displaying. Real key is as the same as you pressed. You can change
displaying type as “normal” type by Paragraph
6-G
command. Then the LCD displaying will show what you
are pressing.
The FAT820W have 2 operation modes. One mode is Un-Buffer mode. When you press one key,
FAT820W send out that key(ASCII) by ETHERNET interface immediately. And the other one is Buffer mode.
It will be kept in buffer, when you press keys, it will not send out all keys(ASCII) in the buffer by
ETHERNET interface until you press ENTER and then the key-in digits on LCD will be erased. The buffer
size is 32 maximum. It will be ignored, if key-in digits over buffer size 32 digits.
Pin#
Signal
Center
(D2.1mm) +9V~+12VDC
Outer
GROUND
