Omron NT631C manual About Communications Conditions

Setting Conditions for Communications with Host by Using Memory Switches Section 6-7

• Screen data transmission is stopped by operation at the Support Tool.

Note When transferring the data in units of screens, if there are changes in memory table and/or direct access, transfer such data along with the screen data.

6-7 Setting Conditions for Communications with Host by Using Memory Switches

The NT631/NT631C can be connected to the host by the following 7 types of communications methods can be used to communicate with a host.

• Host link	• Memory link method
• NT Link (1:1)	• Mitsubishi A-computer link method
• NT Link (1:N)	• Mitsubishi FX method
• High-speed NT Link (1:N)

The NT631/NT631C has the following two ports, either of which can be used for communications with the host, depending on the requirements.

•Serial port A (exclusively for RS-232C, 9-pin connector)

•Serial port B (RS-232C/RS-422A (selectable), 25-pin connector)

The method for setting the communications method for communications with the host is described here.

For details on setting the communications conditions for a bar code reader, refer to 6-10 Setting the Bar Code Reader Input Function.

Reference: • Apart from the host, it is also possible to connect the Support Tool or a bar code reader to serial port A. When a bar code reader is connected at serial port A, the host must be connected at serial port B. When serial port A is being used for communications with the host, the host must be disconnected so that the Support Tool can be connected.

•There are four memory switch setting screens. The conditions for commu- nications with the host are set on the fourth screen (the screen on which 4/4 is displayed). For details on setting memory switches other than those for setting the conditions for communications with the host, refer to 6-9 Various System Settings.

•When using the Mitsubishi A-computer link method and Mitsubishi FX method, a system program for multi-venders is required. Install the sys- tem program to the NT631/631C by the system installer (refer to page 145). For details, refer to PLC Connection Manual (V042-E1-@).

•When using PLCs manufactured by Allen-Bradley, GE Fanuc, or Siemens, refer to NT31/631 Multi Vendor Connection Manual (V060-E1-@).

6-7-1 About Communications Conditions

Items Set for	The following settings are made for the communications conditions for com-
Communications	munications between the NT631/NT631C and the host.
Conditions

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