LS ELECTRIC SV-iP5A Series User manual

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iP5A RS485 Option Board Manual
SV-iP5A series

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Thank you for purchasing RS485 Option Card!
SAFETY PRECAUTIONS
Always follow safety precautions to prevent accidents and potential hazards from
occurring.
In this manual, safety messages are classified as follows:
WARNING
CAUTION
Throughout this manual we use the following two illustrations to make you aware
of safety considerations:
Identifies potential hazards under certain conditions
Read the message and follow the instructions carefully.
Identifies shock hazards under certain conditions
Particular attention should be directed because dangerous voltage may be
present.
Keep operating instructions handy for quick reference.
Read this manual carefully to maximize the performance of LS485/Modbus-
RTU/Metasys-N2 for SV-iP5A series inverters and ensure its safe use.
CAUTION
Be cautious, when handling the CMOS components of the Option Board.
Static may lead to malfunctioning of the product.
Turn off the inverter power, when changing the communication cable.
Otherwise, you may damage the board or a communication error may occur.
Make sure to insert the Option Board connector to the inverter precisely.
Otherwise, you may damage the board or a communication error may occur.
Check the parameter unit before setting up the parameter.
Otherwise, a communication error may occur.
Improper operation may result in serious personal injury or
death.
Improper operation may result in slight to medium personal
injury or property damage.

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Table of Contents
1. Introduction........................................................................................................................................................ 3
1.1 Features ....................................................................................................................................... 3
1.2 Before Installation ......................................................................................................................... 3
2. Specification...................................................................................................................................................... 3
2.1 Performance specification............................................................................................................. 3
2.2 Hardware Specifications................................................................................................................ 3
2.3 Communication Specification ........................................................................................................ 4
3. Product Details.................................................................................................................................................. 4
3.1 RS485 Option Board Layout and Names of part............................................................................ 4
3.2 Status LED.................................................................................................................................... 4
3.3 Termination Configuration ............................................................................................................. 5
3.4 Communication Protocol Selection (RS485/Modbus-RTU/Metasys-N2)......................................... 5
4. Installation.......................................................................................................................................................... 6
4.1 Installing RS485 Option Board and Parameter setting ................................................................... 6
4.2 Connection guide for the communication card, the computer and the converter............................. 8
5. Communication protocol................................................................................................................................. 8
5.1 LS485 Protocol ............................................................................................................................. 8
5.1.1 Basic format........................................................................................................................ 8
5.1.2 Detailed Read protocol ....................................................................................................... 9
5.1.3 Detailed Write protocol...................................................................................................... 10
5.1.4 Detailed Monitor Register protocol ................................................................................... 10
5.1.5 Error code ..........................................................................................................................11
5.2 Modbus-RTU Protocol................................................................................................................. 12
5.2.1 Available Function code.................................................................................................... 12
5.2.2 Exception code ................................................................................................................. 12
5.2.3 Baud Rate......................................................................................................................... 12
5.3 Broadcast Function ..................................................................................................................... 12
6. Trouble shooting............................................................................................................................................. 12
7. Parameter Code (All parameter addresses are Hex values).................................................................... 13
7.1 SV-iP5A Common Area ............................................................................................................... 13
7.2 Metasys-N2 Protocol I/O Point Map............................................................................................. 15
7.2.1 Analog Output................................................................................................................... 15
7.2.2 Binary Output.................................................................................................................... 16
7.2.3 Analog Input...................................................................................................................... 16
7.2.4 Binary Input....................................................................................................................... 17

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1. Introduction
This instruction manual describes about specification and how to set up the RS485 option board for SV-
iP5A drive to communicate with PLC or PC. SV-iP5A series drive can be controlled and monitored by
PLC , PC and other master module with RS485 option board.
1.1 Features
Inverter can be easily applicable to Factory Automation because operation and monitoring is available by
User-program.
* Parameter setting and monitoring is available via computer.
(Ex: Freq. Command, Run/Stop etc.)
* Interface type of RS485 reference:
1) Allows the drive to communicate with any other computers.
2) Allows one computer to control up to 31 drives with multi-drop link system.
3) Noise-resistant interface.
Users can use any kind of RS232/485 converters. It is possible to communicate with computer which has
built-in type of RS232 card. The specifications and performances of converters depend on the
manufacturers, but the basic functions are the same. Refer to the converter manual for detailed
specifications and instructions on how to use.
1.2 Before Installation
Before installation and operation, this manual should be read thoroughly. If not, it could cause personal
injury or damage other equipment.
2. Specification
2.1 Performance specification
Items
Specifications
Communication method
RS485 (RS232/485 converter)
Transmission form
Bus method, Multi-drop Link System
Applicable inverter
SV-iP5A series
Converter
Converter with RS232 card embedded
Number of inverters connected
Maximum 31 drives connectable 1
Transmission distance
Max. 1200m (Less than 700m recommended) 2
2.2 Hardware Specifications
Items
Specifications
Installation
Use option connector on the inverter control board
Power Supply
Control Board
From inverter power supply(5V)
Communication
Board
From control board (5V)
1
The number of inverters to be connected is up to 31.
2
The specification of length of the communication cable is max. 1200m. To ensure stable communication, limit its length
below 700m.

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2.3 Communication Specification
Items
Specifications
Communication speed
1200 /2400/4800/9600/19200/38400/76800/115200 bps 3
Control procedure
Asynchronous communication system
Communication system
Half-duplex system
Character system
LS485: ASCII(8bit)
Modbus-RTU: Binary (8 bit)
Metasys-N2: ASCII (8 bit)
Start/Stop bit
Start 1bit, Stop 1/2bit
Error check
LS485 : Checksum (2 byte)
Modbus-RTU: CRC16 (2 byte)
Metasys-N2: CRC 16 (2 byte)
Parity check
None/Even/Odd 4
3. Product Details
3.1 RS485 Option Board Layout and Names of Part
Figure 1. Layout and Names of Part
3.2 Status LED
CPU LED (LED1)
Indicates the option card works normally.
RXD LED (LED3)
Receiving communication signal
TXD LED (LED2)
Transmitting communication signal
ERR LED (LED4)
Blinking intermittently
Receiving wrong DATA (Normal operation)
Blinking simultaneously with CPU
LED
Communication malfunction between drive
and option board
Blinking oppositely to CPU LED
Network Connection Time Out
3
Metasys-N2: Fixed 9600 bps
4
Metasys-N2: Fixed No Parity
Protocol
Selecting S/W
Connector
Comm.
Connection
Terminal Block
ON
OFF
SW1
L
E
D
4
E
D
1
Support puts
L
E
D
2
L
E
D
3
L
Terminal
SW
Green
TXD
Green
RXD
Green
CPU
Red
Error

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3.3 Termination Configuration
Figure 2. Communication Terminal Block
Pin
5G
GND
N
P
Role
Signal Ground
Ground
Signal line
5G : Ground of communication terminal.
Terminal S/W: Drive at the end of the network must turn On the S/W.
3.4 Communication Protocol Selection (LS485/Modbus-RTU/Metasys-N2)
Setting method
The Modbus-RTU protocol is selected when the No.1 (among the DIP switches located on the lower
right corner of the option card) is ON, and LS485 protocol is selected when the No.1 is OFF. SV-
iP5A series have the same setting.
(At this time the On/Off status of the No.3, 4 DIP switches has not an effect on the protocol
selection.)
ON
1 2 3 4
ON
1 2 3 4
ON
1 2 3 4
Precautions when setting
Even if the Master’s protocol is changed during communication between Master and slaves (LS
Drives), the communication is resumed automatically in case of adjusting the DIP switch on the
option card in accordance with the master’s protocol.
LS485 protocol selection
Modbus-RTU protocol selection
N
P
5G
N
P
Terminal
S/W
Metasys-N2 Protocol selection

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4. Installation
4.1 Installing RS485 Option Board and Parameter setting
①Connect RS485 Option Board connector to the option connector inside the inverter control board.
(See Figure 3, 4). Make sure that the support is well connected. if the position of the support is not
right, it means that the option card is not connected correctly.
②Power up the inverter after verifying the option card is installed properly.
③When powering up the inverter, CPU LED is blinking per second after all LEDs blink one after
another.
④If “CPU LED” is not blinking, power down the inverter swiftly and check for the proper installation of
the option card.
(Caution: The inverter and option card may get damaged in case that power is applied to the
inverter for a long time when CPU LED is not blinking.)
* If this problem occurs continuously, contact LS distributors.
⑤Check displayed < COM-01 > for SV-iP5A is set to RS485.
⑥Set the parameters as below when the above steps are all done.
Figure 3. SV-iP5A RS485 Option Board Installation

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1. SV-iP5A Setting
5
Parameter code
Display
Setting Value
COM-01
Opt B/D
RS485 displayed automatically
COM-02
Opt mode
Set Commands controlled via communication
0: None (Not set Run/Freq. command via communication)
1: Command (Set Run command via communication)
2: Freq (Set Freq. commands via communication)
3 : Cmd+Freq (Set Run/Freq. command via communication)
COM-61
Inv. No.
1 ~ 250
1: Factory Default
(Verify the assigned number is not duplicated)
COM-62
Baud rate 6
0 : 1200 bps
1 : 2400 bps
2 : 4800 bps
3 : 9600 bps (Factory Default)
4 : 19200 bps
5 : 38400 bps
6 : 76800 bps
7 : 115200 bps
COM-63
Parity/Stop
0 : 1 Stop bit, No Parity (Factory Default)
1 : 2 Stop bit, No Parity
2 : 1 Stop bit, Even Parity
3 : 1 Stop bit, Odd Parity
COM-64
COM Lost Cmd 7
0 : None (Factory Default)
1 : FreeRun
2 : Stop
COM-65
COM Time Out 8
0.1 ~ 120 sec
1.0 sec (Factory Default)
COM-67
Comm UpDate
After Comm Update set to “Yes”, it is changed to “No”
automatically.
⑦Turn Off the inverter power for the connection of converter after option board installation and
parameter setting.
⑧In case of option board used on terminal, terminal switch is turned On according to Figure 2.
it is applied after ‘COMM Update’ of COM-67 setting is changed ‘Yes’ mode.
7It is used for Emergency Stop when communication between inverter and Master is not done properly. It is activated
when communication is not done even once for the set time. It indicates the inverter is not controlled by Remote. Set
this value for safety.
8If communication between master and drive is not connected for the setting time, drive will be stop according to ‘COM
Lost Cmd’ setting.

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4.2 Connection Guide for the Communication Option Board, the Computer and
the Converter
Figure 5. Communication System Configuration
5. Communication protocol
Use LS485 protocol (for LS only) and Modbus-RTU protocol. LS485 and Modbus-RTU protocol are
Open protocol. For more information, contact LS distributor.
Computer or other host acts as Master while inverters act as slaves. The drive responds to
Read/Write command from Master.
5.1 LS485 Protocol
5.1.1 Basic format
Command message (Request):
ENQ
Inverter No.
CMD
Data
SUM
EOT
1 byte
2 byte
1 byte
n byte
2 byte
1 byte
Normal response (Acknowledge Response):
ACK
Inverter No.
CMD
Data
SUM
EOT
1 byte
2 byte
1 byte
n * 4 byte
2 byte
1 byte
Negative response (Negative Acknowledge Response):
NAK
Inverter No.
CMD
Error code
SUM
EOT
1 byte
2 byte
1 byte
2 byte
2 byte
1 byte
Description:
* Request starts with “ENQ” and ends with “EOT”.
* Acknowledge Response starts with “ACK” and ends with “EOT”.
* Negative Acknowledge Response starts with “NAK” and ends with “EOT”.
* “Inverter Number” represents the number of Inverters and indicates in 2 byteASCII-HEX.
(ASCII-HEX: Hexadecimal consists of ‘0’ ~ ‘9’, ‘A’ ~ ‘F)
Option
Card
Inverter n
Inverter 2
Inverter 1
Master
(Ex:PC,PLC)
M
a
s
t
e
r
(예:PC,PLC)
……
RS232/485
Converter
Option
Card
Option
Card

9
* CMD: Capital letter (“IF Error” when small letter is used.)
Character
ASCII-HEX
Command
‘R’
52h
Read
‘W’
57h
Write
‘X’
58h
Request for Monitor Register
‘Y’
59h
Execution for Monitor Register
* Data: ASCII-HEX
Ex) when data value is 3000: 3000 →‘0’ ‘B’ ‘B’ ‘8’ h →30h 42h 42h 38h
* Error code: ASCII (20h ~ 7Fh)
* Receive/Send buffer size: Receive= 39 byte, Send=44 byte
* Monitor register buffer: 8 Word
* SUM: to check the communication error
SUM= ASCII-HEX format of lower 8 bit of (Inverter No. + CMD + DATA)
Ex) Command Message (Request) for reading one address from address “9000”
ENQ
Inverter No.
CMD
Address
Number of address
SUM
EOT
05h
“01”
“R”
“3000”
“1”
“AC”
04h
1
2
1
4
1
2
1
SUM = ‘0’ + ‘1’ + ’R’+ ‘3’+ ‘0’ + ‘0’ + ‘0’ + ‘1’
= 30h + 31h + 52h + 33h + 30h + 30h + 30h + 31h
= 1A7h (Except Control value: ENQ, ACK, NAK, etc.)
5.1.2 Detailed Read protocol
Request for Read: Request for reading Word data of the successive ‘n’ number from address
“XXXX”
ENQ
Inverter No.
CMD
Address
Number of Address
SUM
EOT
05h
“01” ~ “1F”
“R”
“XXXX”
“1” ~ “8” = n
“XX”
04h
1
2
1
4
1
2
1
Total byte = 12, The quotation marks (“ ”) mean character.
Acknowledge Response:
ACK
Inverter No.
CMD
Data
SUM
EOT
06h
“01” ~ “1F”
“R”
“XXXX”
“XX”
04h
1
2
1
N * 4
2
1
Total byte = 7 + n * 4 = Max. 39
Negative Acknowledge Response:
NAK
Inverter No.
CMD
Error code
SUM
EOT
15h
“01” ~ “1F”
“R”
“**”
“XX”
04h
1
2
1
2
2
1
Total byte = 9