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3
to a printer, etc. The usage of start and end codes can be specified and RTS and
CTS signals can be controlled.
TXD instructions
CPU Unit
Communications Board
RS-232C, RS-422A,
or RS-485
RXD instructions
Non-procedural communications
External device with RS-232C,
RS-422A, or RS-485 port (bar
code reader, printer, etc.)
1:1 Links
Common data areas can be created in the LR Area without using PC Link Units
by connecting two PCs 1:1 via the RS-232C port.
CPU Unit
Communications Board
RS-232C or RS-422A
Common data area data from LR Areas
CPU Unit
CPU Unit’s RS-232C port, or
RS-232C/RS-422A port on
Communications Board
NT Links: 1:1 or 1:N
A PC can be connected to one or more PTs (Programmable Terminals) via an
RS-232C port to enable data transfer via NT Link commands.
CPU Unit
Communications Board
NT-AL001 Link Adapter
(RS-232C to RS-422A/485 conversion)
RS-232C
RS-232C
PT
PT
PT
PT
Protocol Macros
Data transfer procedures called protocols can be easily created using the Proto-
col Support Software (sold separately). Procedures can be designed to match
Functions
Section 1-1
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