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  • Welcome to the IS4310 Modbus Chip Wiki
  • Datasheet
    • Presentation
    • Description
      • Function Codes
      • Exception Codes
      • IS4310 Advantages
      • Modbus UART Port
    • Pin Description
    • Memory Description
      • Memory Map Table
      • HOLDx Registers
      • MBADR Register
      • MBBDR Register
      • MBPAR Register
      • MBSTP Register
    • I2C-compatible Bus Description
      • Single Word Read
      • Multiple Word Read
      • Single Word Write
      • Multiple Word Write
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    • Isolated RS485 Design Example
    • Bus Topology
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  1. Datasheet
  2. Description

Function Codes

Following Function Codes are available on the IS4310 (Modbus Slave):

  • 0x03 - Read Holding Registers

  • 0x06 - Write Sigle Register

  • 0x10 - Write Multiple Registers

If the PLC (Modbus Master) attempts to execute a query with a Function Code not listed above, the IS4310 (Modbus Slave) will respond with Exception Code 1.

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Last updated 20 days ago