User's Manual

4-6 Wiring Method
4-6
4-16
1) Example of wiring for 1-to-1 connection
Note
Be sure to turn on the terminal resistance on both the host and Reader/Writer sides.
2) Example of wiring for 1-to-N connection
Terminal resistance setting
When you connect more than one Reader/Writer, turn on the terminal resistance for the Reader/Writer that is
located farthest from the host and the terminal resistance for the host. The terminal resistance for all the other
Reader/Writers must be off.
＋
−
上位機器
4
5
4
5
COM1
V720- BC5D1
COM2
終端抵抗 2 2 0 Ω
あり
終端抵抗220 Ω
あり
+
−
4
5
4
5
COM1
C0M2
COM1
COM1
COM2
COM2
4
5
4
5
4
5
4
5
Second
Reader/Wri t er
Fi rst  Reader/Wri t er
Nt h Reader/ Wri t er
( max.  31) 
Termi nal  
resi st ance 220Ω
V720S- BC5D4A
Termi nal  
Resi st ance  220
Termi nal  
resi st ance
220
Ω
V720S-BC5D4
V720S- BC5D4A
Termi nal  
resi st ance
220
Ω
Host
V720S- BC5D4A
V720S- BC5D4A
Host
Terminal resistance
220Ω is on
Terminal resistance
220Ω is on