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 February 2015)
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
The conversion cable cannot connect multiple inverters. (The computer and inverter are connected in a 1:1 pair.) This product is an RS-
232C to RS-485 conversion cable that has a built-in converter. No additional cable or connector is required. For the product details, contact
the manufacturer.
626
5. PARAMETERS
5.15 (N) Communication operation parameters
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
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
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
Station 0
Inverter
PU
connector
RJ-45
connector
628.)