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Host Link Function for Replacing Existing PLCs Section 4-6
Unit Ver. 1.2 or Later
Host computer programs for 1:1 Host Links that have been created using a
C200H/C1000H/C2000H PLC can also be used with CS/CJ-series PLCs by
selecting the 1:1 Host Link protocol. The 1:N/1:1 Host Link setting in the
Setup Area in the DM Area enable selection of 1:1 Host Links.
Note The differences between the command and response frames for 1:N Host
Links and 1:1 Host Links is as follows:
1:N Host Link
• Command Format
• Response Format
1:N/1:1 setting Details Supported PLCs Remarks
1:N protocol A Host Link protocol that
enables a single host to be
connected to a single PLC
(1:1) or to multiple PLCs
(1:N).
In previous Boards/Units, only
the 1:N protocol was sup-
ported.
C Series
Built-in port:
SRM1, CPM1, CPM1A,
CQM1-CPU
@@, C200HS-
CPU
@@, C200HE/HG/HX-
CPU
@@, C200HW-COM@@
CS/CJ Series
Built-in port:
CS1G/H-CPU
@@H, CS1G/H-
CPU
@@-V1, CS1D-
CPU
@@H, CJ1G/H-
CPU
@@H, CJ1G/M-CPU@@
Earlier models (pre-Ver. 1.2):
CS1W-SCB21(-V1)/41(-V1),
CS1W-SCU21(-V1), CJ1W-
SCU21/41
The CS/CJ Series, C200HS/
HX/HG/HE(-Z), CPM
@, and
CQM1
@ Series all support
only 1:N Host Links for the
CPU Unit’s built-in port and
Host Link Unit/Serial Commu-
nications Board.
The earlier Serial Communi-
cations Units/Boards support
only 1:N Host Links.
CVM1/CV Series
CVM1/CV-CPU
@@ CVM1
(built-in port), CV500-LK201
The CVM1/CV Series sup-
ports only 1:N Host Links for
the CPU Unit’s built-in port
and Host Link Unit/Serial
Communications Unit/Board.
C Series
C500-LK101/201/103/203,
C120-LK101/201/202
The C-series Host Link Units
shown here support both 1:1
protocol and 1:N protocol.
C Series
C200H-LK101/201/202
1:1 protocol A Host Link protocol that
enables a single host to be
connected to a single PLC
only.
C Series
C500-LK101/201/103/203,
C120-LK101/201/202
C Series
C200H-LK101/201/202
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FCSHost Link
Unit No.
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code
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Host Link
Unit No.
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