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Method for Connection to the Host
Section 2-1
2-1 Method for Connection to the Host
This section describes the methods for connection to the host used with the
NT31/NT31C, and the relationship between the connection method and the com-
munication method.
2-1-1 Connection Method and Communication Method
S NT31/NT31C communication ports and communication methods
The NT31/NT31C has two communication ports. Their uses are indicated in the
table below.
Communication Port Usable Communication Methods Communication Type
Serial port A
Host link
NT link (1:1)
NT link (1:N)
Memory link
(Support Tool connection)
(bar code reader input function)
RS-232C
Serial port B
Host link
NT link (1:1)
NT link (1:N)
Memory link
RS-232C
RS-422A/485
(select between RS-232C
and RS-422A/485)
S Communication methods that can be used with the host
The following communication methods can be used with the hosts that can be
connected to the NT31/NT31C.
- RS-232C
- RS-422A
- RS-485
The communication types that are actually supported differ depending on the
host unit. For details, refer to Section 4 “Connecting to the Host from the
RS-232C Port” and Section 5 “Connecting to the Host from the RS-422A/485
Port”.
S Converting the communication type with an RS-232C/RS-422A convertor unit
The following communication type conversions are possible by using an
RS-232C/RS-422A convertor unit (NT-AL001, made by OMRON).
- RS-232C ⇔ RS-422A
- RS-232C ⇔ RS-485
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