
PLZ-4W
Remote Control 7-5
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
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.
Code
Function
ASCII code
DC1
Transmission request
11H
DC3
Transmission stop request
13H
DC3
RXD
DC1
TXD
After receiving DC3, the PLZ-4W pauses transmission within 3 characters.
Within
3 characters
Pause
Resume transmission
Transmission control from the RS-232C terminal to the PLZ-4W
DC3
TXD
RXD
The RS-232C terminal must pause transmission within 10 characters
after receiving DC3.
Within
10 characters
Transmission control from the PLZ-4W to the RS-232C terminal
DC1
Pause
Resume transmission
Summary of Contents for PLZ1004W
Page 16: ...1 10 General Information PLZ 4W ...
Page 34: ...2 18 Installation and Preparation PLZ 4W ...
Page 86: ...5 30 Basic Operation PLZ 4W ...
Page 210: ...A 22 Appendix PLZ 4W ...
Page 215: ......