Salter Brecknell WB-521 Series User Manual
Page 67

SBI521 Service Manual
65
The data frame format from COM2 is:
Total 12 bytes are in a frame string. W1W2W3 is 24bits output raw counts from ADC
(Hex format), (ST) is status byte,
lower order 4bits of XX
Status byte definition:
When Indicator is going to power off, it outputs following content to COM2:
6.5.4 Communication when USER-COM1/2-LAYOUT is set to 200S/200F:
Commands and response
Command:
W
Response:
The indicator will not respond if the scale is in motion, positive overload or negative
overload.
Figure 6.1 Set for 200S
Bit
STH
Bit
STL
4
0= in working
1=be going to power off
0
0= AD is not over
1=AD is ove
5
X
1
0= no AD error
1= AD error
6
0
2
0=not new data
1=new data
7
0
3
0=voltage is not low
1=voltage is low