Kikusui KFM2151, Operation Manual

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4-4
KFM2151
Remote Control
RS232C communication
Use X-Flow control or acknowledge function for RS232C communication.
Transmission/reception may not work correctly through unilateral transmission.
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X-Flow control
The transmission/reception on the KFM2151 can be controlled using Xon/Xoff. DC
(device control) codes are used to carry out control.
Ta b le 4-2 DC codes
Fig.4-2 RS232C terminal and transmission control of the
KFM2151
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Acknowledge message
An acknowledge message is information sent from the KFM2151 to the controller.
It notifies that the processing of the program message has been completed.
The acknowledge message is an ASCII code string consisting of only the header.
The following two types are available.
• OK: Normal completion
• ERROR: Syntax error or other errors
Page 3-12
To use acknowledge messages, set Acknowledge to On in the CONFIG settings.
On the controller, the RS232C configuration must be set to full-duplex operation.
Code F u nction ASCII Code
DC1
Transmission
req u est
11H
DC3
Transmission
stop req u est
13H
DC3 RXD DC1
TXD
After receiving DC3, the KFM2151 pauses
transmission within 3 characters.
Within 3
characters
Pause Resume transmission
Resume transmission
DC3 TXD
RXD
The RS232C terminal must pause transmission
within 10 characters after receiving DC3.
Within 10
characters
Transmission control from KFM2151 to the RS232C terminal
DC1
Pause
See