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Connecting to the RS-232C Port at the Host Section 4-1
Reference: Version 1 (-V1) and high-speed versions (H) of the CS-series and CJ-series
CPU Units support the high-speed 1:N NT Link method in addition to the
standard 1:N NT Link method. Furthermore, the high-speed 1:N NT Link
method can be used in earlier versions of CS-series CPU Units by installing
the latest version of a Serial Communications Board or Unit. For details, refer
to Using the High-speed NT Link (1:N) Method (page 70).
Settings at the Host
The Settings required for each Unit are described below.
• Connecting a C-series C200HX/HG/HE(-Z)E, CQM1H, or SRM1
PLC Setup Area Settings
Write the PLC Setup area (data memory) settings directly from a Program-
ming Device (e.g. CX-Programmer) in accordance with the host model and
port.
*1
RS-232C port on the Communications Board
*2
RS-232C port on the Serial Communications Board
*3
When using a C200HE(-Z)E, the maximum PT unit number is 3.
Refer to the PLC’s operation manual for details on changing PLC Setup set-
tings.
Setting the DIP Switches of a C200HX/HG/HE(-Z)E
When using a C200HX/HG/HE(-Z)E, the DIP switches on the front panel must
be set as shown below in order to make the settings in the PLC Setup area
(data memory) effective.
Connecting to CS/CJ-series CPU Units
CS/CJ-series CPU Unit: CS1G/H-CPU@@-E(V1), CS1G/H/D-CPU@@H,
CJ1G/M-CPU@@, CJ1G/H-CPU@@H
Connect the PT to the CPU Unit’s built-in RS-232C port. Use a CS1W-CN118
Connecting Cable, however, if connecting the PT to the peripheral port of the
CPU Unit.
PLC Setup Area Settings
When connecting to a CS/CJ-series CPU Unit, set the following communica-
tions conditions for the PLC Setup area, in accordance with the communica-
tions port to be used.
Connection to Word # Writing
Value
Setting
C200HX/HG/HE(-Z)E, SRM1
Built-in RS-232C port
DM6645 5@00 Use NT link (1:N)
@ = highest unit number of
the connected PTs (1 to 7)
(*3)
C200HX/HG/HE(-Z)E
Communications Board port A
*1
CQM1H port 1
*2
DM6555
C200HX/HG/HE(-Z)E
Communications Board port B
*1
DM6550
RS-232C port communications condition setting
Set DIP SW5 to OFF to make the settings made in
PLC Setup effective.