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14-2 Program-free Communications with
Programmable Terminals
Programmable Terminal communications can be used only with the CP1E N/NA-type CPU Unit.
14-2-1 Overview
Communications without special communications programming is possible between a CP1E CPU Unit
and a Programmable Terminal (PT) by using the 1:N NT Link protocol.
Connect the serial port of the CP1E CPU Unit and PT with NT Link (1:N) communication mode, and
connect the CP1E CPU Unit and PT 1:1 as shown below.
PT: NS, NP, or NT31/631 V3
RS-232C
1:N NT Link
Connectable Programmable Terminals (PTs)
High-speed NT Links (115,200 bps) can be used with NS-series, NP-series, or NT-series PTs.
Precautions for Correct Use
Precautions for Correct Use
• Communications are not possible for CP1E CPU Units using the 1:1 NT Link protocol. Do not
connect more than one PT to a CP1E CPU Unit even if the 1:N NT Link protocol is used.
• SAP (Smart Active Parts) on NS-series PTs cannot be used for CP1E CPU Units.
• The main unit of NT31/31C/631/631C cannot be connected with NT Link for the system pro-
grams preinstalled prior to Ver.1 and system programs in Chinese (Simplified and Traditional)
version and Korean version. Connect with Host Link.
CP1E CPU Unit Software User's Manual(W480)
CP1E N/NA-type CPU Unit
14 Serial Communications
14
14-5
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