Yokogawa Removable Chassis DX1000N - Manual (Page 61)

9
IM 04L41B01-02E
Installation and W
iring
Recommended Replacement
Periods for W
orn Parts
Setup Items and
Default V
alues
Connecting to the RS-422/48 (/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 N•m
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
Do not connect an Ethernet cable whose plug does
not comply with FCC specifications. If you do, the
DX may malfunction.
CAUTION
Checking the Connection/Communication Status
You can check the connection status of the Ethernet interface with the indicators that are
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 display 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