Yokogawa Value Series FX1000 - Manual (Page 70)

2-6
IM 04L21B01-17EN
• XON-XON
• Data transmission control
Software handshaking is performed between the FX and the PC. When an
“X-OFF” code is received while sending data to the PC, the FX stops the data
transmission. When the FX receives the next “X-ON” code, the FX resumes the
data transmission. The CS signal received from the PC is ignored.
• Data reception control
Software handshaking is performed between the FX and the PC. When the free
area of the received buffer decreases to 1537 bytes, the FX sends an “X-OFF”
code. When the free area increases to 511 bytes, the FX sends an “X-ON” code.
RS = True (fixed).
• XON-RS
• Data transmission control
The operation is the same as with XON-XON.
• Data reception control
Hardware handshaking is performed between the FX and the PC. When the free
area of the received buffer decreases to 1537 bytes, the FX sets “RS=False.”
When the free area increases to 511 bytes, the FX sets “RS=True.”
• CS-RS
• Data transmission control
Hardware handshaking is performed between the FX and the PC. When the
CS signal becomes False while sending data to the PC, the FX stops the data
transmission. When the CS signal becomes True, the FX resumes the data
transmission. The “X-OFF” and “X-ON” signals are treated as data.
• Data reception control
The operation is the same as with XON-RS.
Note
• The PC program must be designed so that the received buffers of both the FX and the PC
do not become full.
• If you select XON-XON, send the data in text format.
2.3 Connecting the FX