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(Graph 4-1) Serial Communication port and score display port
4.4 Connecting Scoreboard to Indicator
1. The display interface of scoreboard is 15-pin socket, which has been clearly shown
in the Graph 4-1.
2. The scoreboard signal is 20mA continuous current loop, outputting in binary code, the baud
rate is 600.
4.5 Connecting Printer to Indicator
1. The print port adopts parallel output and 25-pin connecting socket, which has been
clearly shown in the Graph 4-3.
123
4
5678910111213
14 15 16 17 18 19 20 21 22 23 24 25
ST D0 D1 D2 D3 D4 D5 D6 D7
BUSY
GND
2. Printing notes:
▲ You must set the printer before you use it.
▲ You must connect the indicator and the printer correctly. The wrong
connection will destroy indicator output interface or printer input interface, and
may even destroy the indicator or printer.
▲ Turning on the printer as following: connecting the line correctly first, turning on
the indicator power, and turning on the printer power finally.
Turning off the printer as following: turning off the printer power first, and then
turning off the indicator power, cutting off the line finally.
Wrong procedure may destroy the indicator or printer.