User manual - INDICATOR TRS-10a
register byte
reg. 02h
byte low
reg. 02h
byte high
reg. 01h
byte low
reg. 01h
byte high
decade no.
3
2
1
0
bit no.
7
6
5
4
3
2
1
0
segment no.
DP
G
F
E
D
C
B
A
Tab.5.1. Decades and segments numbering
Register 02h
- In „
decimal mode
” lower byte of this register defines decimal point position
(which decade will display decimal point - see Figure 5.1). Thanks to this
function it is possible to display fractional values. For example if value 007Ch
(decimal 124) is stored in register 01h, it causes of displaying digits 1, 2 and 4
on suitable positions. If then value 0001h will be stored in register 02h, is will
turn on decimal point on decade no. 1, what results by displaying of value
"
12.4
", with dimmed most left decade. If value 0003h will be written to reg. 02h
then value "
0.124
" will be displayed. Additionally higher byte of register 02h
decides about interpretation of reg. 01h value. If higher byte of register 02h
equal to 00h, then decimal value of register 01h content will be displayed. If
higher byte of register 02h is equal to one of values from Tab. 5.2, then
appropriate warning will be displayed (these warnings are defined by
producer), and content of register 01h will be ignored.
Higher byte of reg. 02h
Display
00h
Decimal value of register 01h content modificatedby lower byte of
register 02h (decimal point)
1Xh
Warning:
”humi”,
water inside module
2Xh
Warning:
”Err”,
sensor damage
4Xh
Warning:
”-Lo-”,
measured value under allowed range
8Xh
Warning:
”-Hi-”,
measured value over allowed range
FXh
Warning:
”-??-”,
no communication with input module
X- this part does not matter ( 0h – Fh)
Tab. 5.2. Display state, depend on higher byte of register 02h value.
10
