The Type Of Host And Settings - Omron Programmable Terminals NT31 NT31C Setup Manual

Connecting to the Host's RS-232C Port
PC (At termination)
NT31C
(Not at
(Not at
termination) (Not at
termination)
Example of Good Connection
Reference: CS1 series CPUs cannot be connected with the 1:1 connection NT link method.

5-1-1 The Type of Host and Settings

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.
Relay terminal block
Max. 2 m
NT31 NT31 NT31
NT31
(At
termination)
termination)
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).
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
Host link
NT link (1:1)
NT link (1:N)
High-speed NT link (1:N) Using the High-speed NT Link (1:N) Method (page 75)
Memory link
PC
NT31C NT31 NT31 NT31C
Examples of Bad Connections
Reference
Host Link Method (page 54)
NT Link (1:1) method (page 67)
Using the NT Link (1:N) Method (page 72)
Memory Link Method (page 78)
Section
PC
Relay terminal block
NT31
5-1
87