I-7530A-MR

The PLC, HMI and SCADA are popular in the various industrial control applications, but most of them don’t provide CAN interfaces. Users always experienced difficulties due to connecting the sensors or actuators which only have a CAN interface. The basic function of I-7530A-MR is compatible with I-7530A, and the “MR” stands for “Modbus RTU”. So, the I-7530A-MR supports Modbus RTU protocol in its RS-232/422/485 port. Modbus RTU is popular and widely supported by most of the PLCs, HMIs, and SCADAs. I-7530A-MR is helpful to use standard Modbus RTU protocol to access CAN networks without difficulties. And with the special designed firmware, beside normal received CAN message buffer, it offers special memory space to save up to 100 kinds of CAN messages which are urgent and must be processed immediately. The feature helps the PLC, HMI and SCADA to use Modbus RTU function code 3,4,16 to access CAN devices in a easy way.

 

 

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    Description

    In Modbus RTU mode, it allows a Modbus RTU master to communicate with CAN devices on a CAN network. The following figure shows the application architecture of this mode.

    In pair-connection mode, this module provides the pair connection and transparent communication between the RS-232/485/422 devices via CAN bus. The application architecture may be as follows.

     

    In the Modbus Master mode, it allows many Modbus RTU slaves to communicate with CAN devices on a CAN network. The following figure shows the application architecture in this mode. The Modbus master function can be supported in firmware version v1.11 or later.

    Applications

      • Control System
      • Building Automation
      • Factory Automation
      • Distributed data acquisition

    Features

    • RoHS Design
    • Fully compatible with ISO 11898-2 standard
    • Programmable CAN bus baud rate from 10 kbps to 1 Mbps or user-defined baud rate
    • Support CAN bus acceptance filter configuration
    • Support firmware update via RS-232
    • Provide utility tool for module setting and CAN bus communication testing
    • Built-in jumper to select 120Ω terminal resistor
    • CAN buffer: 128 data frames ; UART buffer: 256 bytes
    • Power, data flow and error indicator for CAN and UART status
    • Hardware Watchdog design
    • Convert CAN message to specific ASCII command string (Normal mode)
    • Convert specific ASCII command string to CAN message (Normal mode)
    • Provide the transparent communication between the RS-232/485/422 devices via CAN bus (Pair-connection mode)
    • In Modbus Slave mode, I-7530A-MR supports function code 0x03, 0x04, 0x06 (firmware version v1.11 or later), and 0x10 of Modbus RTU command for reading or writing CAN message (Modbus Slave mode). (New)
    • Support Modbus Master function (firmware version v1.11 or later). (New)

     

    Utility

    • CAN bus Baud Rate configuration
    • CAN acceptance filter configuration
    • CAN 2.0A or 2.0B specific selection
    • RS-232/485/422 baud rate and data format configuration
    • RS-232/485/422 communication with checksum function selection
    • Communication mode setting
    • Easily transmit/receive CAN messages

     

    Hardware Specifications

    Hardware
    EEPROM
    16 KB (for system information), 10,000,000 erase/write cycles
    CAN Interface
    Transceiver
    NXP 82C250
    Connector
    9-pin male D-Sub (CAN_L, CAN_H, N/A for others)
    Channels
    1
    Baud Rate (bps)
    10 k, 20 k, 50 k, 100 k, 125 k, 250 k, 500 k, 800 k and 1 M (allow user-defined baud rate)
    Protection
    3000VDC power protection and 3750Vrms photo-couple isolation on CAN side
    Terminal Resistor
    Selectable 120Ω terminal resistor by jumper
    Support Protocol
    ISO-11898-2, CAN 2.0A and CAN 2.0B
    Pin Assignment
    C.I.A. DS-102 (CAN_H=7, CAN_L=2)
    UART Interface
    COM
    RS-232/RS-485/RS-422 (can’t be used simultaneously)
    Connector
    14-pin terminal connector
    RS-232 : TxD, RxD, GND
    RS-422 : TxD+, TxD-, RxD+, RxD-
    RS-485 : DATA+, DATA-
    Baud Rate (bps)
    300,600,1200, 2400, 4800, 9600, 19200, 38400, 57600, 115200, 230400
    Protection
    3000VDC power protection and 2500Vrms photo-couple isolation on UART side
    LED
    Round LED
    PWR/CAN/UART
    Power
    Power supply
    +10 ~ +30 VDC
    Power Consumption
    1.5 W
    Dip Switch
    Init (Firmware Update, Module Configuration)/Normal (Firmware Operation)
    Mechanism
    Installation
    DIN-Rail
    Dimensions
    72mm x 118mm x 35mm (W x L x H)
    Environment
    Operating Temperature
    -25 ~ 75 ℃
    Storage Temperature
    -30 ~ 80 ℃
    Humidity
    10 ~ 90% RH, non-condensing

    Hardware Structure

    Wire Connection

    Pin Assignment

     

    Performance Test

    RS-232/422 full-duplex communication mode
    CAN setting
    RS-232/422 setting
    RS-232/422 command length
    The max frames/sec
    2.0B, 1Mbps
    115200,n,8,1
    27 Bytes
    370
    2.0B, 1Mbps
    230400,n,8,1
    27 Bytes
    666
    2.0B, 1Mbps
    460800,n,8,1
    27 Bytes
    1250

    Ordering Informations

    I-7530A-MR CR
    		 Modbus RTU to CAN converter (RoHS)

    Datasheet

    I-7530A-MR

    i7530amr_quickstart_en_v10

    i-7530a-mr_usermanual_en_v108

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