Parameter details
104
NOTE
• Connection cable between converters and computer
Refer to the following for the connection cable (RS-232C to RS-485 converter) between the computer with an RS-232C
interface and a converter. Commercially available products (as of February 2015)
∗1
The conversion cable cannot be used for connection of multiple converters. (The computer and the converter 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.
• Refer to the following table when fabricating the cable on the user side.
Commercially available products (as of February 2015)
∗2
Do not use pins No.
2
and
8
of the communication cable.
3.5.20
Initial settings and specifications of RS-485
communication (Pr.117 to Pr.124)
[Parameters related to PU connector communication]
Use the following parameters to perform required settings for RS-485 communication between the converter and a
personal computer.
• Use the PU connector on the converter as communication interface.
• The Mitsubishi inverter protocol is used. Parameter setting, monitoring, etc. can be performed through
communication.
• To make communication between the personal computer and the converter, setting of the communication
specifications must be made to the converter in advance.
Data communication cannot be made if the settings are not made or if there is any setting error.
Pr.
Name
Initial
value
Setting range
Description
117
PU communication station
number
0
0 to 31
Use this parameter to specify the converter station
number.
Set the station number for each converter when two
or more converters are connected to one personal
computer.
118
PU communication speed
192
48, 96, 192, 384
Set the communication speed.
The setting value × 100 equals the communication
speed.
For example, enter 192 to set the communication
speed of 19200 bps.
119
PU communication stop bit
length
1
Stop bit length
Data length
0
1 bit
8 bits
1
2 bits
10
1 bit
7 bits
11
2 bits
120
PU communication parity
check
2
0
Parity check disabled.
1
Parity check (odd parity) enabled.
2
Parity check (even parity) enabled.
121
PU communication retry
count
1
0 to 10
Set the permissible number of retries for
unsuccessful data reception. When the number of
consecutive errors exceeds the permissible value,
the converter stops retrying for communication.
9999
The converter does not retry for communication
when the communication is unsuccessful.
Model
Manufacturer
Interface embedded cable
DAFXIH-CAB (D-SUB25P for personal computer) /
DAFXIH-CABV (D-SUB9P for personal computer)
+
Connector conversion cable DINV-485CAB (for converter)
Diatrend Corp.
Interface embedded cable dedicated for inverter
DINV-CABV
Product name
Model
Manufacturer
Communication cable
SGLPEV-T (Cat5e/300 m)
24AWG × 4P
Mitsubishi Cable Industries, Ltd.
RJ-45 connector
5-554720-3
Tyco Electronics
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