Specifications

External Devices: Printers, PCs and Scales 45
7.3 Connecting to a PC
7.3.1 Setting the Scale Specifications for Communication to a PC
The DC-788’s RS-232C port can be used to connect the scale to a PC and output the data string to the computer.
The following specifications must be set for the data transfer to take place: (for more information on setting
specifications, see
Figure 3.1.1)
• SPC05, Bits 3 and 2-Function of RS-232C Interface, must be set to 00: PC.
• SPC06, Bits 3 and 2-RTS/CTS Handshaking of RS-232C must be set to 0: On or 1: Off depending on
the application receiving the data.
• SPC06, Bits 1 and 0-Baud Rate of RS-232C must be set for the proper Baud Rate for your
application.
• SPC07, Bit 3-Stop Bit of RS-232C must be set to the proper Stop Bit for your application.
• SPC07, Bit 2-Data Length of RS-232C must be set to the proper Data Length for your application.
• SPC07, Bits 1 and 0-Parity of RS-232C must be set to the proper Parity for your application.
• SPC10, Bits 3 and 2 - Interval of Time Out Error of RS-232C must be set to the proper Time Out
Interval for your application.
• SPC10, Bit 1 - Transmission Condition of RS-232C sets whether you want the data output only
when the weight is stable or to be output unconditionally.
7.3.2 Communication Method
SPC08-RS232C PC Protocol configures whether the data transfer to the computer is inhibited (0000: Inhibit Data
Transfer); is transmitted continuously to the computer (0001: Standard Stream Type (continuous output); is
transmitted when pressing the + (Plus), - (Minus), or * PRINT keys (0010: Standard Manual Type); or is
transmitted only when a command is received from the PC (0011: Standard Command Type).
7.3.2.5 Standard Stream Data Transmission (Continuous)
Set SPC08-RS232C PC Protocol to 0001: Standard Stream Type (continuos output). The communication
between the DC-788 and the computer flows as follows:
Figure 7-6. Continuous Stream Data Transmission Flowchart