Rice Lake Dual Ramp Wheelchair Platform Scale with Seat (350-10-4) - Manual (Page 15)

Wheelchair Scale with Seat Operation Manual - RS-232 Communication 11
5.0 RS-232 Communication
The scale comes with an RS-232 port that enables weight data to be transmitted to other equipment, such as a
computer or printer. The RS-232 cable with DB-9 connector (PN 100719) is available from Rice Lake Weighing
Systems. Figure 5-1 on page 11 shows where the RS-232 connection is.
The RS-232 parameters are 9600 baud (selectable in the programming mode), 8 data bits, 1 stop bit, no parity
and no handshaking.
There are three methods of communication:
• Pushbutton keypad print
• Escape protocol
• Maintenance protocol
5.1 Pushbutton Keypad Print
With a stable, in-range weight, press and hold the LB/KG/Print key for at least three seconds, or until the scale
displays PRINT . Note that if the scale does not beep after five seconds, then release the button as the weight was
either in motion, or out of range.
• If displaying weight and not BMI, the scale will send out the following 21 character string:
xxxxxxxxx<SP>uu<SP>mmmmm<SP><CR><LF>
Where:
xxxxxxxxx is the weight with decimal point and “ - “ sign, if negative, uu is the unit (lb or kg).
mmmmm is the mode (gross or net)
Example:
60.1 KG= <PATIENT><SP><WEIGHT><SP>-60.1<SP>KG<SP><CR><LF>
• In BMI mode (displaying the BMI value), the scale will send out the following data:
PATIENT WEIGHT 60.1 KG
PATIENT HEIGHT 170.0 CM
PATIENT BMI 20.8
5.2 USB Connection
The Rice Lake Digital Wheelchair Scale with seat has the capability of connecting to a PC using a USB
connection and a USB cable (not included). That connection location is shown in Figure 5-1.
Figure 5-1. USB Connection Port
USB Connection
Load Cell Connection
Under This Cover
RS-232 Connection