YOKOGAWA EML500 Series, Руководство пользователя, Страница: 72 / 85

A-3
IM80B80T10E 21th Edition : Jul.1,2007-00
< Appendix >
Appendix 3: Master Indicator Block Diagram
1
a
2
b
3
c
4
d
5
e
6
f
7
g
8
dp
9
0
10
1
11
2
12
3
13
4
15
VCC
14
ONPLS
16
GND
17
+V
18
COM
1 VCC
2 GND
3 +V
4 COM
5
6
7
8
1
4
2
3
3
2
4
1
5
0
6
4
7
3
8
2
9
1
10
0
11 12 13 14
DC . DC CONV
+24V → VCC
POWER UNIT
PROCESSOR UNIT
DISPLAY UNIT
KEY SW MATRIX
I/O DECORDER
DRIVER
LATCH
CTC
DECORDER
DRIVER
(LED DISPLAY)
(COL. DRIVE SIG.)
(COL. SELECT DATA)
(DIMMER PLS)
BUFFER
+V
INKEY
SCAN SCAN INKEY
SEL
SEG SEG
SEL
DECORDER
MPU INT
CTC
PIO SIO
ROM
RAM
Real Time INT RATE CLR
PA7 PA0 PB7 PB0 A15
A0 D7 D0
TxD RxD
(SEG. DATA)
32k (128k)
128k
(effective:
32k )
PIO CH A
PIO DATA CH B
DATA BUS
ADRS BUS
BACK LIGHT LED
+24V
GND
FG
RD A
RD B
TD A
TD B
SHLD
for displaying
unit signs