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Interface (Rs-232C) - Sanyo VZU-485 Instruction Manual

Rs-485/232c interface board
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RS232C (RF4QR/NA GB Operation Board)
Fri. Sept., 06/2002

INTERFACE (RS-232C)

Pin locations
1 2 3 4 5
6 7 8
9
Pin
Signal Operation
number
1
Receive
2
RXD
data
3
TXD
Send data
4
Signal
5
GND
ground
6
Request
7
RTS
to send
8
9
The signal transmission is compatible with RS-232C
specifications.
English
Data format
Mode
Character length
Data transmission speed
Signal direction
Parity check
Stop bit
The data transmission speed can only be set.
VCR ← Computer
To set the data transmission speed, refer to "SETTING
FOR RS-485 or RS-232C USE" on page 5.
VCR → Computer
Communication protocol
The communication is based on 1 byte units. After the
computer has transmitted 1 byte, it will wait for an
answer from the VCR then send the following byte of
data.
VCR → Computer
The VCR answer can be 1 byte or more, for example,
the counter position consists of 6 bytes.
Connection
Connect a 9-pin D-SUB cable (sold separately) from
the RS-232C connector on the rear panel to the
computer serial connector.
3
Asynchronous
8 Bits
2400, 4800, 9600 or
19200 bps
None
1 bit

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Vzu-232c