49 lines
2.6 KiB
Go
49 lines
2.6 KiB
Go
// Copyright 2014 Quoc-Viet Nguyen. All rights reserved.
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// This software may be modified and distributed under the terms
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// of the BSD license. See the LICENSE file for details.
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package modbus
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type Client interface {
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// Bit access
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// ReadCoils reads from 1 to 2000 contiguous status of coils in a
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// remote device and returns coil status.
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ReadCoils(address, quantity uint16) (results []byte, err error)
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// ReadDiscreteInputs reads from 1 to 2000 contiguous status of
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// discrete inputs in a remote device and returns input status.
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ReadDiscreteInputs(address, quantity uint16) (results []byte, err error)
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// WriteSingleCoil write a single output to either ON or OFF in a
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// remote device and returns output value.
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WriteSingleCoil(address, value uint16) (results []byte, err error)
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// WriteMultipleCoils forces each coil in a sequence of coils to either
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// ON or OFF in a remote device and returns quantity of outputs.
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WriteMultipleCoils(address, quantity uint16, value []byte) (results []byte, err error)
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// 16-bit access
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// ReadInputRegisters reads from 1 to 125 contiguous input registers in
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// a remote device and returns input registers.
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ReadInputRegisters(address, quantity uint16) (results []byte, err error)
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// ReadHoldingRegisters reads the contents of a contiguous block of
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// holding registers in a remote device and returns register value.
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ReadHoldingRegisters(address, quantity uint16) (results []byte, err error)
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// WriteSingleRegister writes a single holding register in a remote
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// device and returns register value.
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WriteSingleRegister(address, value uint16) (results []byte, err error)
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// WriteMultipleRegisters writes a block of contiguous registers
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// (1 to 123 registers) in a remote device and returns quantity of
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// registers.
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WriteMultipleRegisters(address, quantity uint16, value []byte) (results []byte, err error)
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// ReadWriteMultipleRegisters performs a combination of one read
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// operation and one write operation. It returns read registers value.
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ReadWriteMultipleRegisters(readAddress, readQuantity, writeAddress, writeQuantity uint16, value []byte) (results []byte, err error)
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// MaskWriteRegister modify the contents of a specified holding
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// register using a combination of an AND mask, an OR mask, and the
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// register's current contents. The function returns
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// AND-mask and OR-mask.
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MaskWriteRegister(address, andMask, orMask uint16) (results []byte, err error)
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//ReadFIFOQueue reads the contents of a First-In-First-Out (FIFO) queue
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// of register in a remote device and returns FIFO value register.
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ReadFIFOQueue(address uint16) (results []byte, err error)
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}
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