OHAUS DISCOVERY BALANCE, Руководство по обслуживанию

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CHAPTER 4 TESTING
4.3 RS232 Interface Test
The Discovery Balance Interface can be tested using an external printer or computer
connected to the Balance.
The RS232 menu provides communication parameters which can be set to accommodate
external printers or computers. It contains three submenus:
Baud rate, Parity and
Handshake .
1. Set the RS232 Baud rate, Parity and Handshake as required on the balance.
2. Set the communication parameters on the computer to the same settings as the
balance.
3. Connect an RS232 cable (Part Number 80500525) between the balance and the
computer.
Baud Rate
Use the submenu to change the Baud settings. Baud rates can be set from the range of 600 to
19,200. The default setting is 9600 .
Parity
Use the submenu to change the Parity settings. Parity can be set to 7 Odd, 7 Even, 7 No Parity
or 8 No Parity. The default setting is
8 No Parity .
Handshake
Use the submenu to change the Handshake settings. Handshake can be set to: Off,
XONXOFF, or Hardware. The default setting is
XONXOFF.
4.4 RS232
Connection
4.4.1 Connecting the RS232 Interface
On the rear of the balance, the 9-pin female subminiature “D” connector COM 1, is provided for
interfacing with other devices. Figure 4-1 is a diagram of the RS232 connector with pin holes
numbered. Table 4-2 indicates the respective pin functions.
Ohaus Corporation www.ohaus.com 4-6 Discovery Balance Service Manual