YOKOGAWA WT310EH User Manual page 26

CS-RS
Data Transmission Control
Hardware handshaking is performed between this instrument and the PC. If CS is set to false while
this instrument is sending data, it stops the data transmission. Then, if CS is set to true, it resumes
the operation. The "X-OFF" and "X-ON" signals are treated as data.
Data Reception Control
Hardware handshaking is performed between this instrument and the PC. When the free area of
the receive buffer falls to 64 bytes, this instrument sets RS to false. When the free area reaches
192 bytes, this instrument sets RS to true.
Notes on Data Reception Control
When handshaking is used to control the reception of data, data may still be received from the PC
even when the free space in the receive buffer drops below 64 bytes. In such cases, if the receive
buffer becomes full, excessive data will be discarded, regardless of the handshaking method. When
more space becomes available, data storage resumes.
Data reception control using handshaking
Used
Note
You must design PC programs so that the receive buffers of both this instrument and PC do not become full.
IM WT310E-17EN
3.4 Configuring the RS-232 Settings of This Instrument
256 bytes
Used Free, 64 bytes
Free, 192 bytes
Used
When handshaking is in use and
the free space in the buffer drops
to 64 bytes (because the data in
the buffer cannot be passed to
the internal program fast
enough), data reception stops.
Data continues to be passed to the
internal program. If the free space
in the buffer reaches 192 bytes,
data reception resumes.
Regardless of the handshaking
method, if the buffer becomes full,
excessive data will be discarded.
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App
Index
3-7