Omron NT31 NT31C manual About Communication 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 NT31/NT31C can be connected to the host by the following 7 types of com- munication methods can be used to communicate with a host.

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

•High-speed NT Link (1:N)

The NT31/NT31C 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 communication method for communications with the host is described here.

For details on setting the communication conditions for a bar code reader, refer to 6-10 Setting the Bar Code Reader Input Function (page 188).

Reference: S 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.

SThere are four memory switch setting screens. The conditions for communica- tions with the host are set on the fourth screen (the screen on which 4/4 is dis- played). For details on setting memory switches other than those for setting the conditions for communications with the host, refer to 6-9 System Settings (page 168).

SWhen using the Mitsubishi A-computer link method and Mitsubishi FX method, a system program for multi-venders is required. Install the system program to the NT31/31C by the system installer (refer to page 151). For details, refer to PC Connection Manual (V042-E1-j).

SWhen using PLCs manufactured by Allen-Bradley, GE Fanuc, or Siemens, re- fer to NT31/631 Multi Vendor Connection Manual (V060-E1-j).

6-7-1 About Communication Conditions

Items Set for	The following settings are made for the communication conditions for commu-
Communication	nication between the NT31/NT31C and the host.
Conditions

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