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5-1SectionConnecting to the Host’s RS-232C Port
87
Note One end of the wire must always be connected to the host (PC), and there must
be no branching. Branching will cause problems such as transmission delays
and communication failures.
NT31
NT31C
PC
PC
NT31
PC
NT31C NT31CNT31 NT31 NT31 NT31 NT31
(At termination)
Relay terminal block Relay terminal block
Max. 2 m
(Not at
termination)
(Not at
termination)
(Not at
termination)
(At
termination)
Example of Good Connection Examples of Bad Connections
Reference: CS1 series CPUs cannot be connected with the 1:1 connection NT link method.
Use the 1:N connection NT Link method (standard or high-speed) instead to
make the 1:1 connection. For details, refer to Using the NT link (1:N) method
(page 72) or Using the High-speed NT link (1:N) method (page 75).
5-1-1 The Type of Host and Settings
The using condition is the same as the connecting PT side RS-232C and the
host side RS-232C.
For the available type and settings of the host, refer to the pages listed below.
Method Reference
Host link Host Link Method (page 54)
NT link (1:1) NT Link (1:1) method (page 67)
NT link (1:N) Using the NT Link (1:N) Method (page 72)
High-speed NT link (1:N) Using the High-speed NT Link (1:N) Method (page 75)
Memory link Memory Link Method (page 78)