55
IM 04L41B01-02E
Installation and
Wiring
Connecting to the RS-422A/485 (/C3)
FG (Frame Ground)
Frame ground of the DX.
SG (Signal Ground)
Signal ground.
SDB (Send Data B)
Send data B (+).
SDA (Send Data A)
Send data A (
−
).
RDB (Received Data B)
Receive data B (+).
RDA (Received Data A)
Receive data A (
−
).
FG SG SDB
SDA
RDB
RDA
Two-wire system
FG SG SDB
SDA
RDB
RDA
Electric potential of the shield
Four-wire system
Shield
Recommended length of stripped wire: 9 mm. Recommended tightening torque: 0.4-0.5 Nm
Cable
There are two types of cables available, the four-wire cable and the two-wire cable (used only for the
Modbus protocol). The cable should meet the following specifications.
• Type:
Shielded twisted pair cable: 3 pairs 24 AWG or more (four-wire),
2 pair 24 AWG or more (two-wire)
• Characteristic impedance: 100
Ω
• Capacitance:
50 pF/m
• Total cable length:
Up to 1.2 km
Connecting to the USB Port (/USB1)
The USB port complies with Rev. 1.1.
USB port
USB port
Rear
Front
USB
CF CARD
Connecting to the Ethernet Port
Ethernet port
Indicator
Checking the Connection/Communication Status
The connection status of the Ethernet interface can be confirmed with the indicator that
is located above the Ethernet connector of the DX.
Indicator
Connection Status of the Ethernet Interface
Illuminated (green)
The Ethernet interface is electrically connected.
Blinking (red)
Transmitting data.
Off
The Ethernet interface is not electrically connected.
Checking the Connection on the DX Display
• Checking the Connection at the status indication section of the DX display.
You can check the connection status of the Ethernet interface on the Ethernet Link
indicator located on the right side of the status indication section of the basic setting
mode display. The basic setting menu appears by pressing
MENU
to display the
setting menu followed by
FUNC
for approximately 3 s.
• Checking the Connection Status in the Display Section in the Upper Right
Corner of the COMMUNICATION LOG Display of the DX
You can check the connection status of the Ethernet interface on the Link indicator on
the display section in the upper right corner of the COMMUNICATION LOG display.
Indicator
Connection Status of the Ethernet Interface
Illuminated (green)
The Ethernet interface is electrically connected.
Off
The Ethernet interface is not electrically connected.
Installation and Wiring