Wiring Method
Section 4-4
4-12
1) Example of wiring for 1-to-1 connection
+
-
上位機器
4
5
4
5
COM1
V720-BC5D1
COM2
終端抵抗220Ω
あり
終端抵抗220Ω
あり
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
Note
When you connect more than one Reader/Writer, turn on the terminal resis-
tance 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.
Host
Terminal resistance
220
Ω
is on
Terminal resistance
220
Ω
is on
V720S-BC5D4
+
-
上位機器
4
5
4
5
COM1
V720-BC5DI
1台目
1台目
n台目
(最大 32台)
COM2
COM1
COM1
COM2
COM2
終端抵抗220Ω
あり
終端抵抗220Ω
なし
4
5
4
5
V720-BC5DI
終端抵抗220Ω
なし
4
5
4
5
V720-BC5DI
終端抵抗220Ω
あり
Host
Terminal
resistance 220
Ω
is on
Terminal
resistance 220
Ω
is off
Terminal
resistance 220
Ω
is off
Terminal
resistance 220
Ω
is on
First
Reader/Writer
Second
Reader/Writer
Nth
Reader/Writer
(max. 32)
V720S-BC5D4
V720S-BC5D4
V720S-BC5D4