64
9
OPTION INTERFACE
64
OPT
ION INT
E
RFA
C
E
Chapter
9
9-1.
BCD interface
The BCD data output is an interface to extract the indicated value of the F350 as BCD data. This
interface is convenient to process controls, totals, records, etc., by connecting the F350 to a
computer, process controller, sequencer or the like.
The I/O and internal circuits are electrically insulated by photocoupler.
■
Connection
●
Output
The signal output circuit employs the TTL open collector output.
9
OPTION INTERFACE
BCD data output
connector
●
Internal transistor status
Output data
Negative Positive
0
OFF
ON
1
ON
OFF
Vceo=30V(max)
●
Output pin level
Output data
Negative Positive
0
H
L
1
L
H
Through logic switching
(
pin B14
)
Vcc
+5V
COM
Ic =30mA (max)
Inside outside
Vext
F350