Setting The Conditions Of Communications With The Plc By Using The Memory Switches - Omron NT11 - 01-2004 User Manual

Setting the Conditions of Communications with the PLC by Using the Memory Switches

Precautions to be Observed During the Screen Data Transmission
3-7 Setting the Conditions of Communications with the PLC
by Using the Memory Switches
Memory Switches
Setting Functions and the Memory Switch Menu
8. You can quit the Transmit Mode and return to the RUN mode by simulta-
neously pressing any two of the four function keys on the panel of the
NT11. The same result is achieved when the NT11 receives a transfer end
instruction from the support tool.
When any of the following or a system error occurs during the screen data
transmission, the transmitted screen data will not be registered correctly to
the NT11. If an error message is displayed in the System Menu and the Trans-
mit Mode cannot be selected, the screen data memory needs to be initialized.
• The power to the NT11 is interrupted or the NT11 is reset.
• The power to the computer on which the support tool is running is inter-
rupted or the computer is reset.
• The cable connecting the NT11 to the computer on which the support tool
is running is disconnected or has a broken wire.
• Screen data transfer is terminated by pressing any two of the function
keys on the panel of the NT11.
• The ESC key on the support tool is pressed to end the transmission.
When the power to the NT11 is turned ON or reset, the screen data is
checked. However, if any of the above occurs during the screen data trans-
mission, the screen may disappear and other unexpected problems may
occur.
In the case of such problems, set DIP-SW2-2 to ON to initialize the memory.
For the memory initialization by using the DIP switch, refer to 3-4-2 Initializa-
tion by Using the DIP Switch (Forced Initialization) (page 65).
The communications between the NT11 and a PLC are called the host com-
munications.
The NT11 can be connected to a PLC by the host link or NT link. The link can
be selected by setting the memory switch. Also, the host link baud rate, auto-
matic reset function, etc. are set with the memory switches.
This section describes the communications condition settings by using the
memory switches.
The NT11 has the memory areas used to store the PLC connection method,
communications conditions, system settings, etc. which can be used as the
switches and called the "memory switches". Since the memory switches use
the flash memory, the stored data can be held even when the power supply is
turned OFF.
The memory switches can be set easily by using the memory switch menu in
the System Menu.
The following settings can be made with the memory switches. Refer to the
subsequent pages for the details of each setting and function.
Section 3-7
71