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Host Link Function for Replacing Existing PLCs Section 4-6
Relationship with 1:N/1:1 Protocol Settings
The 1:N/1:1 Host Link protocol setting depends on the compatible device
mode, as follows:
• Mode A (CS/CJ/C), mode B (CVM1/CV): 1:N Host Links only
• Mode C (C200H), mode D (C500/120): Either 1:N or 1:1 Host Links
Allocated DM Area Settings (Setup Area)
m = D30000 + 100 × unit number
Setting Examples when Replacing PLCs
A host computer program that has been created using a C500-LK101/201/
103/203 Host Link Unit can be reused in a Serial Communications Board/Unit
with Unit Ver. 1.2 or later by making the following settings to enable the 1:1
Host Link protocol.
• 1:N/1:1 Host Link protocol setting: 1 (ON = 1:1 Host Link)
• Host Link compatible device mode setting: 3 hex (mode C (C500/120))
Words Bit Setting contents
Board Unit
Port 1Port 2Port 1Port 2
D32003 D32013 m+3 m+13 14 1:N/1:1 protocol setting (Unit Ver. 1.2 or later only)
1: 1:1 protocol; 0: 1:N protocol
If the Host Link compatible device mode is set between
0 and 2 hex (mode A or B), the setting in this bit is
invalid (always 1:N Host Links)
D32003 D32013 m+3 m+13 08 to 10 Host Link compatible device mode
0 hex: Default (mode A)
1 hex: Mode A (CS/CJ/C)
2 hex: Mode B (CVM1/CV)
3 hex: Mode C (C200H)
4 hex: Mode D (C500/120)
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