Class: ModBus::RTUClient

Inherits:
Client
  • Object
show all
Includes:
RTU, SP, TCP
Defined in:
lib/rmodbus/rtu_client.rb

Overview

RTU client implementation

Examples:

RTUClient.connect('/dev/ttyS1', 9600) do |cl|
  cl.with_slave(uid) do |slave|
    slave.holding_registers[0..100]
  end
end
RTUClient.connect('127.0.0.1', 10002) do |cl|
  cl.with_slave(uid) do |slave|
    slave.holding_registers[0..100]
  end
end

See Also:

Instance Attribute Summary

Attributes included from TCP

#ipaddr, #port

Attributes included from SP

#baud, #data_bits, #parity, #port, #read_timeout, #stop_bits

Attributes included from Options

#raise_exception_on_mismatch, #read_retries, #read_retry_timeout

Attributes included from Debug

#logger, #raise_exception_on_mismatch, #read_retries, #read_retry_timeout

Instance Method Summary collapse

Methods included from TCP

#open_tcp_connection

Methods included from SP

#open_serial_port

Methods included from RTU

#clean_input_buff, #crc16, #read, #read_rtu_request, #read_rtu_response, #serve

Methods inherited from Client

#close, #closed?, #initialize, #with_slave

Methods included from Debug

#log, #logging_bytes

Constructor Details

This class inherits a constructor from ModBus::Client

Instance Method Details

#get_slave(uid, io) ⇒ Object (protected) 



39
40
41
 
# File 'lib/rmodbus/rtu_client.rb', line 39

def get_slave(uid, io)
  RTUSlave.new(uid, io)
end

#open_connection(port_or_ipaddr, arg = nil, opts = {}) ⇒ Object (protected)

Open serial port



27
28
29
30
31
32
33
34
35
36
37
 
# File 'lib/rmodbus/rtu_client.rb', line 27

def open_connection(port_or_ipaddr, arg = nil, opts = {})
  if port_or_ipaddr.is_a?(IO) || port_or_ipaddr.respond_to?(:read)
    port_or_ipaddr
  elsif File.exist?(port_or_ipaddr) || port_or_ipaddr.start_with?('/dev') || port_or_ipaddr.start_with?('COM')
    arg ||= 9600
    open_serial_port(port_or_ipaddr, arg, opts)
  else
    arg ||= 10002
    open_tcp_connection(port_or_ipaddr, arg, opts)
  end
end