NOTE
• Pins No. 2 and 8 provide power to the operation panel or parameter unit. Do not use these pins for RS-485 communication.
• Do not connect the PU connector to the computer's LAN board, FAX modem socket, or telephone modular connector. The
product could be damaged due to differences in electrical specifications.
Wiring and configuration of PU connector communication system
• System configuration
FR-DU08
Operation
panel
connector
FR-ADP
(option)
RJ-45 connector
• Wiring between a computer and an inverter for RS-485 communication
Computer Side Terminals
Signal name
RDA
RDB
SDA
SDB
RSA
RSB
CSA
CSB
SG
FG
*1
Make connection in accordance with the Instruction Manual of the computer to be used with. Fully check the terminal numbers of the computer
since they vary with the model.
NOTE
• When performing RS-485 communication with multiple inverters, use the RS-485 terminals. (Refer to
• Computer-inverter connection cable
Refer to the following for the connection cable (RS-232C to RS-485 converter) between the computer with an RS-232C
interface and an inverter. Commercially available products (as of October 2020)
Interface embedded cable
DAFXIH-CAB (D-SUB25P for personal computer)
DAFXIH-CABV (D-SUB9P for personal computer)
+
Connector conversion cable DINV-485CAB (for inverter)
Interface embedded cable dedicated for inverter
DINV-CABV
*2
• Use Ethernet cables compliant with the following standards when fabricating the cable.
Category 5e or higher straight cable
(double shielded / STP)
660
5. PARAMETERS
5.15 (N) Communication operation parameters
Downloaded from
ManualsNet.com
Inverter
PU
RS-485
connector
interface/
terminals
RJ-45 connector
Communication cable
Description
Receive data
Receive data
Send data
Send data
Request to send
Request to send
Clear to send
Clear to send
Signal ground
Frame ground
Model
*2
The conversion cable cannot connect multiple inverters. (The computer and inverter are connected in a 1:1 pair.) This is an RS232C-to-
RS485 converter-embedded conversion cable. No additional cable or connector is required. For the product details, contact the
manufacturer.
Ethernet cable
*3
search engine
Station 0
Computer
Inverter
PU
connector
RJ-45
connector
Communication cable
Cable connection and signal direction
Communication cable
∗1
0.2 mm
Diatrend Corp.
*2
Connector
RJ-45 connector
Computer
RS-232C
connector
RS-232C
Maximum
cable
15 m
RS-232C-RS-485
converter
Communication cable
Inverter
PU connector
SDA
SDB
RDA
RDB
2
or more
SG
page
Manufacturer
Type
The following conditioning cables:
• IEEE 802.3 (1000BASE-T)
• ANSI/TIA/EIA-568-B (Category 5e)
Station 0
Inverter
PU
connector
RJ-45
connector
662.)