PC COMMUNICATION PROTOCOL
Name of Control
Auto Hold Time
Auto Off Time
Sleep Time
Keypad Volume
Stable weight Volume
Alarm Volume
Display of Date/Time
Backlight
Contrast
Weight Display Mode (fractions(f), decimals(d) or Pounds and
ounces (p)
Tare Weight
Unit Of Measure (Metric or constitutional)
Positions left in RAM
Table A - Scale Global Values List and Identifiers
Name of component to test
Load Cell A
Load Cell B
Load Cell C
Load Cell D
Battery
PC Communication (USB)
Write to RAM
Read from RAM
Table B - Components to test
The different tables on the scale:
There will be two data tables on the scale. The first will store the subject record data (patient-related da-
ta that does not change) and the second will store the data recorded during the readings made.
Subject record data
Fields: ID, TARE, HEIGHT
Readings
Fields: Index (referring to the ID from the Subject Record Table), Weight, Date-time
Sample and explanation of esc protocol
1. When the scale measures the weight of a patient and sends this over the communications line to the
PC, it will look like this:
Identifier
AHT
AOT
STM
VKE
VSW
VAL
DAT
BAC
CON
WDM
TAR
UOM
RAM
Identifier
Error Code
LCA
E3A
LCB
E3B
LCC
E3C
LCD
E3D
BAT
E4L (Bat Low, but still usable) or
E4U (Bat Low and Unstable)
PCC
E05
WRM
E08
RRM
E09
Direction of communication
<
SCALE>
24
Unit
nn (Seconds)
nn (Minutes)
nn (Seconds)
nn (01..10)
nn (01..10)
nn (01..10)
nn (01 or 10)
nn (01..10)
nn (01..10)
c (f,d,p)
nnn.nn (Kg)
c (m or c)
nnnn (0..max)
<PC>