4-6 Wiring Method
4-6
4-15
4-6-2-2 RS-485 Interface Cabling
Note
On the host side, send the following commands after confirming that the Reader/Writer responds normally.
Do not begin sending commands until the host is completely ready for transmission. Switch the host to receive
mode within 5 ms after completion of transmission of commands. If you fail to do this, the host may not be able to
communicate with the Reader/Writer.
上位機器
5 ms
形V720-BC5D1
コマンドフレーム
コマンドフレーム
レスポンスフレーム
Host
Command frame
V720S-BC5D4A
Command frame
Response frame
RU
N
CO
MM
NO
RM
ER
RO
R
PC
V720-HS04
Setup
・
Node NO. 00
・
Terminating
resistor OFF
RS-485 connection
cable
RS-485
AC100V
RU
N
CO
MM
NO
RM
ER
RO
R
V720-HS04
AC100V
RU
N
CO
MM
NO
RM
ER
RO
R
V720-HS04
AC100V
DC24V
power supply
DC24V
power supply
DC24V
power supply
RS-485 connection cable
RS232C/485
converter
Antenna cable
V720-A41
Setup
・
Node NO. 01
・
Terminating
resistor OFF
Setup
・
Node NO. 31
・
Terminating
resistor ON
RU
N
CO
MM
NO
RM
ER
RO
R
PC
V720-HS04
Setup
・
Node NO. 00
・
Terminating
resistor OFF
RS-485 connection
cable
RS-485
AC100V
RU
N
CO
MM
NO
RM
ER
RO
R
V720-HS04
AC100V
RU
N
CO
MM
NO
RM
ER
RO
R
V720-HS04
AC100V
DC24V
power supply
DC24V
power supply
DC24V
power supply
RS-485 connection cable
RS232C/485
converter
Antenna cable
V720-A41
Setup
・
Node NO. 01
・
Terminating
resistor OFF
Setup
・
Node NO. 31
・
Terminating
resistor ON