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MODBUS_MASTER_ERR_CODE | MX_RTU_Modbus_Rtu_Master_Open (UINT8 slot, SERIAL_PORT port, TTY_PARAM *param) |
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MODBUS_MASTER_ERR_CODE | MX_RTU_Modbus_Rtu_Master_Close (UINT8 slot, SERIAL_PORT port) |
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MODBUS_MASTER_ERR_CODE | MX_RTU_Modbus_Rtu_Master_Read_Coils (UINT8 slot, SERIAL_PORT port, UINT8 unitId, UINT16 startAddr, UINT16 coilCount, UINT8 byteCoils[], UINT32 timeoutMs, UINT8 *exceptionCode) |
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MODBUS_MASTER_ERR_CODE | MX_RTU_Modbus_Rtu_Master_Write_Coils (UINT8 slot, SERIAL_PORT port, UINT8 unitId, UINT16 startAddr, UINT16 coilCount, UINT8 byteCoils[], UINT32 timeoutMs, UINT8 *exceptionCode) |
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MODBUS_MASTER_ERR_CODE | MX_RTU_Modbus_Rtu_Master_Write_Coil (UINT8 slot, SERIAL_PORT port, UINT8 unitId, UINT16 addr, UINT8 coil, UINT32 timeoutMs, UINT8 *exceptionCode) |
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MODBUS_MASTER_ERR_CODE | MX_RTU_Modbus_Rtu_Master_Read_Discrete_Inputs (UINT8 slot, SERIAL_PORT port, UINT8 unitId, UINT16 startAddr, UINT16 coilCount, UINT8 byteCoils[], UINT32 timeoutMs, UINT8 *exceptionCode) |
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MODBUS_MASTER_ERR_CODE | MX_RTU_Modbus_Rtu_Master_Read_Input_Regs (UINT8 slot, SERIAL_PORT port, UINT8 unitId, UINT16 startAddr, UINT16 regCount, UINT16 regs[], UINT32 timeoutMs, UINT8 *exceptionCode) |
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MODBUS_MASTER_ERR_CODE | MX_RTU_Modbus_Rtu_Master_Read_Holding_Regs (UINT8 slot, SERIAL_PORT port, UINT8 unitId, UINT16 startAddr, UINT16 regCount, UINT16 regs[], UINT32 timeoutMs, UINT8 *exceptionCode) |
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MODBUS_MASTER_ERR_CODE | MX_RTU_Modbus_Rtu_Master_Write_Holding_Regs (UINT8 slot, SERIAL_PORT port, UINT8 unitId, UINT16 startAddr, UINT16 regCount, UINT16 regs[], UINT32 timeoutMs, UINT8 *exceptionCode) |
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MODBUS_MASTER_ERR_CODE | MX_RTU_Modbus_Rtu_Master_Write_Holding_Reg (UINT8 slot, SERIAL_PORT port, UINT8 unitId, UINT16 addr, UINT16 reg, UINT32 timeoutMs, UINT8 *exceptionCode) |
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Sample Code:
modbus_rtu_master.c
- Parameters
-
[in] | slot | Slot 0: Built-in COM Ports, Slots 1 ~ 12: Expansion COM Ports. |
[in] | port | Ports 0 ~ 3. |
[in] | param | Serial settings, e.g., baud rate, parity, flow control, etc. |
- Returns
- MODBUS_MASTER_ERR_CODE
- Parameters
-
[in] | slot | Slot 0: Built-in COM Ports, Slots 1 ~ 12: Expansion COM Ports. |
[in] | port | Ports 0 ~ 3. |
- Returns
- MODBUS_MASTER_ERR_CODE
- Parameters
-
[in] | slot | Slot 0: Built-in COM Ports, Slots 1 ~ 12: Expansion COM Ports. |
[in] | port | Ports 0 ~ 3. |
[in] | unitId | Unit ID from 0x0 to 0xffff. |
[in] | startAddr | Modbus Address from 0x0 to 0xffff. |
[in] | coilCount | The amount of coils to be read from Start Address. |
[out] | byteCoils | Read Data from Modbus RTU Slave. |
[in] | timeoutMs | Coils read timeout in milliseconds. |
- Returns
- MODBUS_MASTER_ERR_CODE
- Parameters
-
[in] | slot | Slot 0: Built-in COM Ports, Slots 1 ~ 12: Expansion COM Ports. |
[in] | port | Ports 0 ~ 3. |
[in] | unitId | Unit ID from 0x0 to 0xffff. |
[in] | startAddr | Modbus Address from 0x0 to 0xffff. |
[in] | coilCount | The amount of coils to be written from Start Address. |
[in] | byteCoils | Written Data to Modbus RTU Slave. |
[in] | timeoutMs | Coils write timeout in milliseconds. |
- Returns
- MODBUS_MASTER_ERR_CODE
- Parameters
-
[in] | slot | Slot 0: Built-in COM Ports, Slots 1 ~ 12: Expansion COM Ports. |
[in] | port | Ports 0 ~ 3. |
[in] | unitId | Unit ID from 0x0 to 0xffff. |
[in] | addr | Modbus Address from 0x0 to 0xffff. |
[in] | coil | Written Data to Modbus RTU Slave. |
[in] | timeoutMs | A Coil write timeout in milliseconds. |
- Returns
- MODBUS_MASTER_ERR_CODE
- Parameters
-
[in] | slot | Slot 0: Built-in COM Ports, Slots 1 ~ 12: Expansion COM Ports. |
[in] | port | Ports 0 ~ 3. |
[in] | unitId | Unit ID from 0x0 to 0xffff. |
[in] | startAddr | Modbus Address from 0x0 to 0xffff. |
[in] | coilCount | The amount of discrete inputs to be read from Start Address. |
[out] | byteCoils | Read Data from Modbus RTU Slave. |
[in] | timeoutMs | Discrete inputs read timeout in milliseconds. |
- Returns
- MODBUS_MASTER_ERR_CODE
- Parameters
-
[in] | slot | Slot 0: Built-in COM Ports, Slots 1 ~ 12: Expansion COM Ports. |
[in] | port | Port 0 ~ 3. |
[in] | unitId | Unit ID from 0x0 to 0xffff. |
[in] | startAddr | Modbus Address from 0x0 to 0xffff. |
[in] | regCount | The amount of input registers to be read from Start Address. |
[out] | regs | Read Data from Modbus RTU Slave. |
[in] | timeoutMs | Input registers read timeout in milliseconds. |
- Returns
- MODBUS_MASTER_ERR_CODE
- Parameters
-
[in] | slot | Slot 0: Built-in COM Ports, Slots 1 ~ 12: Expansion COM Ports. |
[in] | port | Ports 0 ~ 3. |
[in] | unitId | Unit ID from 0x0 to 0xffff. |
[in] | startAddr | Modbus Address from 0x0 to 0xffff. |
[in] | regCount | The amount of holding registers to be read from Start Address. |
[out] | regs | Read Data from Modbus RTU Slave. |
[in] | timeoutMs | Holding registers read timeout in milliseconds. |
- Returns
- MODBUS_MASTER_ERR_CODE
- Parameters
-
[in] | slot | Slot 0: Built-in COM Ports, Slots 1 ~ 12: Expansion COM Ports. |
[in] | port | Ports 0 ~ 3. |
[in] | unitId | Unit ID from 0x0 to 0xffff. |
[in] | startAddr | Modbus Address from 0x0 to 0xffff. |
[in] | regCount | The amount of holding registers to be written from Start Address. |
[in] | regs | Written Data to Modbus RTU Slave. |
[in] | timeoutMs | Holding registers write timeout in milliseconds. |
- Returns
- MODBUS_MASTER_ERR_CODE
- Parameters
-
[in] | slot | Slot 0: Built-in COM Ports, Slots 1 ~ 12: Expansion COM Ports. |
[in] | port | Ports 0 ~ 3. |
[in] | unitId | Unit ID from 0x0 to 0xffff. |
[in] | addr | Modbus Address from 0x0 to 0xffff. |
[in] | reg | Written Data to Modbus RTU Slave. |
[in] | timeoutMs | A Holding Register write timeout in milliseconds. |
- Returns
- MODBUS_MASTER_ERR_CODE