Initial Settings And Specifications Of Rs-485 Communication - Mitsubishi Electric FR-XC-18.5K-PWM Instruction Manual

Parameter details
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)
Interface embedded cable
DAFXIH-CAB (D-SUB25P for personal computer) /
DAFXIH-CABV (D-SUB9P for personal computer)
+
Connector conversion cable DINV-485CAB (for converter)
Interface embedded cable dedicated for inverter
DINV-CABV
∗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)
Product name
Communication cable
RJ-45 connector
∗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)
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.
[Parameters related to PU connector communication]
Pr.
PU communication station
117
number
118 PU communication speed
PU communication stop bit
119
length
PU communication parity
120
check
PU communication retry
121
count
104
PARAMETERS
Model
∗1
Model
SGLPEV-T (Cat5e/300 m)
24AWG × 4P
∗2
5-554720-3
Initial
Name
value
0
192
1
2
1
Manufacturer
Diatrend Corp.
∗1
Manufacturer
Mitsubishi Cable Industries, Ltd.
Tyco Electronics
Setting range
Use this parameter to specify the converter station
number.
0 to 31 Set the station number for each converter when two
or more converters are connected to one personal
computer.
Set the communication speed.
The setting value × 100 equals the communication
48, 96, 192, 384 speed.
For example, enter 192 to set the communication
speed of 19200 bps.
Stop bit length
0 1 bit
1 2 bits
10 1 bit
11 2 bits
0 Parity check disabled.
1 Parity check (odd parity) enabled.
2 Parity check (even parity) enabled.
Set the permissible number of retries for
unsuccessful data reception. When the number of
0 to 10
consecutive errors exceeds the permissible value,
the converter stops retrying for communication.
The converter does not retry for communication
9999
when the communication is unsuccessful.
Description
Data length
8 bits
7 bits