Rockwell Automation 61C365 4 Output 4-20mA Analog Rail - Manual (Page 39)

BĆ1
Appendix B
Block Diagram
CIRCUITRY
4-20mA OUT 4-20mA OUT 4-20mA OUT 4-20mA OUT
ISOLA
TION
B OUNDARY
MAIN
CONTROL CIRCUITRY RESET AMP AMP AMP AMP
VREF VREF VREF VREF
VREF
PRECISION VOL
TAGE REF VREF DU
AL
DIGIT
AL
Ć
ANAL
OG
CONVERTER
ISOLA
TED
ANAL
OG
POWER
ISOLA
TED POWER
S I G N A L S
DU
AL
DIGIT
AL
Ć
ANAL
OG
CONVERTER
AĆC AĆC D
ĆC+
D
ĆC+
SERIAL
Ć
PARALLEL REGISTER ISOLA
TED
CONTROL CIRCUITRY
D AT
A BUS
D/A CONTROL SIGNALS
PRECISION VOL
TAGE REF VREF
ISOLA
TED CONTROL SIGNALS
HOST
INTERF
ACE
CIRCUITRY
LOCAL HEAD OR RAIL MODE SWIT
CH
Vcc
POWER LED COMMUNICATION LED
SERIAL HOST INTERF
ACE
12 PNT
.
HOST
CONNECTOR
GND