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LS RS485/Modbus-RTU User Manual

Option card for sv-ip5a/iv5 series
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Summary of Contents for LS RS485/Modbus-RTU

  • Page 2: Safety Precautions

    Thank you for purchasing LS RS485/Modbus-RTU 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: Improper operation may result in serious personal injury or death.

  • Page 3: Before Installation

    INTRODUCTION SV-iP5A/iV5 inverter can be controlled and monitored by the sequence program of the PLC or other master module. The option card provides a terminal block for an RS-485/Modbus-RTU interface. Drives or other slave devices may be connected in a multi-drop fashion on the RS-485/Modbus-RTU network and may be monitored or controlled by a single PLC or PC.

  • Page 4: Communication Specification

    2.3. Communication Specification Items Specifications Communication speed 1200 /2400/4800/9600/19200/38400 bps Selectable Control procedure Asynchronous communication system Communication system Half duplex system Character system RS485 : ASCII(8bit), Modbus-RTU : Binary (7/8 bit) Start/Stop bit Start 1bit, Stop 1/2bit RS485 : Checksum(2byte) Error check Modbus-RTU : CRC16(2byte) Even/Odd...

  • Page 5: Status Led

    4.1. Installing RS485/Modbus-RTU card ① Connect RS485/Modbus-RTU communication card connector to the option connector inside the inverter control board. (See Figure 1, 2). Make sure that the support is well connected. Is the position of the support is not right, it means that the option card is not connected right.
  • Page 6 1. SV-iP5A Setting Parameter code Display Setting Value < COM-01 > Opt B/D RS485 displayed automatically < COM-02 > Opt mode Set Commands controlled via communication 1~250 < I/O- 90 > Inv. No. (Verify the assigned number is not duplicated) <...
  • Page 7 T1 and T2. This allows the internal termination resistor (120Ω) to be connected. 4.3.3. Communication Protocol Selection (RS485/Modbus-RTU) 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 RS485 protocol is selected when the No.1 is OFF.

  • Page 8: Communication Protocol

    Modbus-RTU protocol selection Precautions when setting Even if the Master’s protocol is changed during communication between Master and slaves (LS inverters), the communication is resumed automatically in case of adjusting the DIP switch on the option card in accordance with the master’s protocol.
  • Page 9 * 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.
  • Page 10 Acknowledge response: Inverter No. Data “01” ~ “1F” “W” “XXXX…” “XX” n * 4 Total byte = 7 + n * 4 = Max. 39 Negative response: Inverter No. Error code “01” ~ “1F” “W” “**” “XX” Total byte = 9 5.1.4.

  • Page 11: Modbus Rtu Protocol

    * Acknowledge response: Inverter No. Data “01” ~ “1F” “Y” “XXXX…” “XX” n * 4 byte 2 byte 1 byte Total byte = 7 + n * 4 = Max 39 * Negative response: Inverter No. Error code “01” ~ “1F” “Y”...

  • Page 12: Exception Code

    0x06 Preset Single Register 0x10 Preset Multiple Register 5.2.2. Exception code Exception code Description 0x01 ILLEGAL FUNCTION 0x02 ILLEGAL DATA ADDRESS 0x03 ILLEGAL DATA VALUE 0x06 SLAVE DEVICE BUSY User 1. Write Disable (Address 0x0004 value is 0). 0x14 define 2.

  • Page 13: Parameter Code (All Parameter Addresses Are Hex Values)

    Power up and down the inverter. CPU LED If this problem occurs continuously, contact LS distributor. Concerning the frequency (speed)/Run command by the option card, please refer to COM group for SV-iP5A and FUN group for SV-iV5.
  • Page 14 Address Parameter Unit Data value Pulse BIT 10 Int. 485 BIT 11 Option BIT 12 BIT 13 Not Used BIT 14 Not Used BIT 15 Set when Network malfunction occurs 0x0007 Acceleration Time 0.1 sec R/W 0x0008 Deceleration Time 0.1 sec R/W 0.1 A 0x0009 Output Current...
  • Page 15 Address Parameter Unit Data value BIT 2 BIT 3 BIT 4 BIT 5 BIT 6 BIT 7 BIT 8 BIT 9 BIT 10 P6 BIT11~15 Not Used BIT 0 AUX1 BIT 1 AUX2 BIT 2 AUX3 BIT 3 AUX4 Output Terminal 0x0010 BIT 4 Q1 (OC1)
  • Page 16 Freq Frequency command via Communication Cmd + Freq Run/Stop and Frequency command via Communication COM-03 [Opt Version] Displays the version of the option card. COM-60 [Parity/Stop] Sets Stop Bit or Parity Check Setting Display Description 8None/1Stop Data: 8bit, Stop: 1bit, Parity: None. 8None/2Stop Data: 8bit, Stop: 2bit, Parity: None 8Even/1Stop...
  • Page 17 Bit05 Decelerating Bit06 Speed Arrival note8) Bit07 Inverter run ready Bit08 Stopping note9) Bit09 Encoder Direction Check Bit10 Torque Limiting note10) Bit11 Forward Run Command note10) Bit12 Reverse Run Command Bit13 Option Run/Stop Command Bit14 Option Frequency Command note11) Bit15 PID Enable Over Current Bit00...
  • Page 18 Bit10 Bit11 Bit12 Bit13 Bit14 Bit15 Not Used Bit00 30A – 30C Bit01 1A – 1B Output Terminal 0x0011 Bit02 2A – 2B Information Bit03 OC1 - EG Bit04~15 Not Used Analog Input 1 (main manual Ai1) 0x0012 Analog Input 1 -100.0%(FC17h).~.100.0%(03E8h) Analog Input 2 (main manual Ai2) 0x0013...
  • Page 19 When it is not connected right, it indicates ‘0’ when at forward run (bit1=‘1’), ‘1’at reverse run (bit2=‘1’) note10) The relationship between Bit10 Forward Command, Bit11 Reverse Command, Bit01 Forward Run(FX), and Bit02 Reverse Run(RX) are as follows. Bit10, Bit11 indicate information of the present run command and Bit01, Bit02 indicate the present operation status.
  • Page 20 value after reading the value from 0x050B when starting Run. note19) When CON_20 Proc PID Enb is set to Enable, it checks up with DIS_04 Process PID output Ref/FB’s Process PID F/B value. note20) When CON_20 Proc PID Enb is set to Enable, it checks up with DIS_04 Process PID output Ref/FB’s Process PID output value.
  • Page 21 note28) 0x050A No-Load Current Command 0.1% No-Load Current Command note29) 0x050B PID Input Command 0.1% PID Input Command note30) 0x050C Draw Input Command 0.1% Draw Input Command note21) You can command Run and Muti-function input via communication. If you want to use the Multi- function input command (P1 ~P7) via communication, be sure to use it after defining the multi- function input of I/O_01 ~ I/O_07.
  • Page 22 FUN_01,02 determine Run/Stop command at an option by the communication. * Run command by option uses 0x0500 of the reference data area. * Speed command by option uses 0x0502 of the reference data area. <I/O Group> Address Description Default Setting Range 725F I/O_95 Inverter Channel...
  • Page 23 0 (8None/1Stop) 1 (8None/2Stop) 761E EXT_30 Parity/Stop 0 (8None/1Stop) 2 (8Even/1Stop) 3 (8 Odd/1Stop) 1000m 761F EXT_31 Delay Time EX_01 [ Opt B/D] A kind of the option board which is installed. It is displayed automatically when the option board is installed. EX_02 [ Opt Version] A version of the communication option board.
  • Page 24 0x010A Save data sent from Select address from EXT_22 communication card to 0x010B Select address from EXT_23 inverter 0x010C Select address from EXT_24 Write only area 0x010D Select address from EXT_25 Read impracticable 0x010E Select address from EXT_26 0x010F Select address from EXT_27 SV- iV5 offers a read-only and a write-only area for all the external communication cards.

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