Fig. 
6.2.1 
Input/output 
internal 
circuits 
(212) 
Sym-
bol 
® 
® 
@ 
® 
Internal 
circuit 
diagram 
FLB 
o  : 
RA:t 
I 
FLC 
o +
24
v; 
Flt-----+-. 
+24V 
+24V 
_  2.20  T 
P24~ 
Fuse resistor 
RCH 
o»--ca-+-, 
LOW 
330 
Fuse resistor 
CPU 
CPU 
Gate 
array 
Analog output 
FM 
4.7k 
Q))-"""T"-C:>--i 
AM 
To.1µ 
cc~ 
AM 
FM 
Response 
3mS 
100mS 
+15V 
CPU 
Low-pass 
filter 
circuit 
Resolution 
11256 
111024 
cr 
better 
2000 
5.1VX2 
To.1µ 
cc 
@-----J 
Sym-
bol 
® 
@ 
® 
@ 
E6580516 
Internal 
circuit 
diagram 
Analog input 
(0-10Vdc) 
+5V 
18k 
RR 
o»----c::i----.--+--
AID 
converter 
5Vmax 
15k 
Note1)J 
0.1 
µ 
cc 
0 
Analog input 
+5V 
(0-1 
OVdc, 
0-20mAdc) 
18k 
IV 
o»--T--r--O--,r----+--
AID 
converter 
SWI 
5Vmax 
Note 
1) 
V~ 
15
k 
' 
0
·
1
µT 
sooo 
cc 
(Q)----1 
0-1 
OVdc 
(switch at V side) 
4-20mAdc 
(switch at I side) 
+I- Analog input 
+5V 
(0-+/-10Vdc,0+/-5Vdc) 
Voltage converter circuit 
1k 
13k 
33k 
0.1 
µ 
Note~1) 
cc 
0 
0-5Vdc 
(switch 
at 
5 side) 
0-1 
OVdc 
(switch at 10 side) 
cc©  I  i 
G/E 
~Grounding 
capacitor 
22µF 
Contact inputs 
+24V 
4.7k 
ST 
s 1 
~s'l 
o»--+--1=i---..-~2c.7k~--f 
RES 
10k 
0.1 
µ 
10k 
AID 
converter 
2.5V±2.5V 
CPU 
Note 
1) 
A capacitor is installed on the analog input terminals (RR, 
RX, 
IV), so if 
an 
output such as 
an 
operational amplifier is directly connected to these terminals, instability may result. Always pass 
signals of this type to these terminals through a 100 O to 1 k O  resistor. 
-
22 
-