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6-7SectionSetting Conditions for Communications with Host by Using Memory Switches
157
• 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.
S There 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).
S When 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).
S When 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
The following settings are made for the communication conditions for commu-
nication between the NT31/NT31C and the host.
Items Set for
Communication
Conditions