34
Pin Assignment
Interface Connector Bu.10 Description Direction
Pin 1 Protective Ground
Pin 2 Data Output (TxD) Output
Pin 3 Data Input (RxD) Input
Pin 4 Not Connected
Pin 5 Clear to Send (CTS) Input
Pin 6 Not Connected
Pin 7 Internal Ground
Pin 8 Internal Ground
Pin 9 Not Connected
Pin 10 Not Connected
Pin 11 + 12 V 50 mA Output
Pin 12 + 10 V 50 mA Output
Pin 13 + 5 V 230 mA Output
Pin 14 Internal Ground
Pin 15 Print Input
Pin 16 Low Signal / Tare ¹) Output / Input ¹)
Pin 17 Ok Signal Output
Pin 18 High Signal Output
Pin 19 Set Signal Output
Pin 20 Data Terminal Ready (DTR) Output
Pin 21 Not Connected
Pin 22 Not Connected
Pin 23 Not Connected
Pin 24 Not Connected
Pin 25 + 5 V Output
1
) Pin 16 can be used either as a low signal (control output) or as a hardware tare command (input). A
corresponding modification can be performed by changing the position of solder straps LB1 and LB2 on the data
interface circuit board (108). Pin 16 has been factory-set as a low signal (LB1 open, LB2 closed).
Important Note:
(concerns only modification of the pin assignments in accordance with footnote
1
))
When repositioning solder straps LB1 and LB2, please note that the factory settings have been accomplished with
traces on the circuit board and not with soldering points.
Therefore, open the trace of the particular solder strap first; then adjust the setting using a soldering point.
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