User manual
X K 3 1 9 0C 602
V. Scoreboard display interface
The scoreboard display interface is the 20mA current loop interface which is capable of
driving various scoreboards.
Please refer to appendix C for the data format and oscillograph of scoreboard display interface.
In the figure, DP+ and DP- are the 20mA current loop interface of scoreboard.
Figure 37 Serial Communication and Scoreboard Display Interface
VI. Serial communication interface (1)
Serial communication interface (1) is RS232C interface which is capable of transmitting AD
switch code or weight data to the PC at high speed, the data rate is equal to AD switching speed.
The function of serial interface (1) can be set by SET 1 parameter 6A and its baud rate can be
set by SET 1 parameter 5A. Refer to appendix D for data format.
Serial interface (1) can also be used as the drive interface to connect the serial interface
printer. The XOFF/XON flow control protocol can be adopted and Busy signal can be used to
control the transmission of printing data.
VII. Serial communication interface (2)
Serial communication interface (2) can transmit data to PC as well as receive control
command issued by the PC and set parameter. Serial communication (2) can communicate with
PC by selecting continuous send or command response. The function of serial interface (2) can
be set by SET 1parameter 6B and its baud rate can be set by parameter 5B.
The factory setting of serial communication interface (2) is RS232C, and it can be
automatically set as RS422/485 interface. The jumper JP4 chooses different positions based on the
selection of RS232 or RS422/484. See figure 3-5 for the connection of communication interface,