111
9−4−2.
Specifications for Interface
(1)
Method Corresponds to RS−422.
(2)
Specifications for Signal
Baud rate : 600, 1 200, 2 400, 4 800, 9 600, 19 200 bps
Data bit length : 7 bits, 8 bits
Parity bit : Non, Even, Odd
Stop bit : 1 bit, 2 bits
Terminator : CR+LF
Communication method : Half duplex
Synchronous method : Start−stop synchronous method.
Transmission data : ASCII code
Cable length : Approx. 1 km
Number of connection : 10 sets at maximum
Termination : Built−in
Input/output monitor with LED
9−4−3.
Procedures of data transfer
(1)
Command mode
By sending the determined command/data from the host(Personal computer, sequencer and so
on) to CSD−814B, data will be sent back from CSD−814B to host side corresponding to the
command/data.
Be sure to execute communication according to the below procedures.
Start
Command / Data
Data
Host → CSD−814B
CSD−814B → Host
● During the Measurement mode only, communication can be executed.
That is, communication can’t be executed whichever in Function
mode, Calibration mode nor Fine adjustment mode.
● Flow control isn’t executed in CSD−814B.
● CTS/RTS signal isn’t applied.
● X flow control isn’t performed.
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