Kikusui PLZ164W User Manual page 157

PLZ-4W
9. Exit from the menu.
Press the MENU (SHIFT+SET/VSET) key. The original screen displayed
before entering menu setup appears.
10. Power cycle the PLZ-4W.
The settings are confirmed.
■ Transmission/Reception via the RS232C
Control the transmission/reception via the RS232C interface using flow control or
by using acknowledge messages. Transmission/reception may not work correctly
through unilateral transmission.
RS232C flow control
By using Xon/Xoff, the transmission/reception on the PLZ-4W can be controlled.
DC (device control) codes are used to carry out control.
Table 7-2 DC codes
Code
DC1
DC3
Transmission control from the RS-232C terminal to the PLZ-4W
RXD DC3
TXD
After receiving DC3, the PLZ-4W pauses transmission within 3 characters.
Transmission control from the PLZ-4W to the RS-232C terminal
DC3
TXD
RXD
The RS-232C terminal must pause transmission within 10 characters
after receiving DC3.
Fig.7-1 RS232C terminal and transmission control of the PLZ-4W
Acknowledge message
An acknowledge message is information sent from the PLZ-4W 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
To use acknowledge messages, select "1. Configuration" | "3. Interface" | "RS232C"
from the menu and turn Ack ON.
On the controller, the RS232C configuration must be set to full-duplex operation.
Function
Transmission request
Transmission stop request
DC1
Pause
Within
3 characters
DC1
Pause
Within
10 characters
ASCII code
11H
13H
Resume transmission
Resume transmission
Remote Control 7-5