Class: Modbus::Cli::ReadCommand
Constant Summary
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- MAX_READ_COIL_COUNT =
1000
- MAX_READ_WORD_COUNT =
125
CommandsCommon::DEFAULT_SLAVE, CommandsCommon::MAX_WRITE_COILS, CommandsCommon::MAX_WRITE_WORDS
Instance Method Summary
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address_parameter, datatype_options, debug_option, format_options, host_option, host_parameter, output_option, slave_option, timeout_option
#addr_format, #addr_offset, #addr_type, #data_size, #modicon_match, #schneider_match, #sliced_write_coils, #sliced_write_registers
Instance Method Details
#address_to_s(addr, format = addr_format) ⇒ Object
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# File 'lib/modbus-cli/read_command.rb', line 140
def address_to_s(addr, format = addr_format)
case format
when :schneider
case addr_type
when :bit
'%M' + addr.to_s
when :word, :int
'%MW' + addr.to_s
when :dword
'%MD' + addr.to_s
when :float
'%MF' + addr.to_s
end
when :modicon
case addr_type
when :bit
(addr + 1).to_s
when :word, :int
(addr + 400001).to_s
end
end
end
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#execute ⇒ Object
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# File 'lib/modbus-cli/read_command.rb', line 75
def execute
ModBus::TCPClient.connect(host, port) do |cl|
cl.with_slave(slave) do |sl|
sl.debug = true if debug?
sl.read_retry_timeout = timeout if timeout
if output then
case addr_type
when :bit
read_coils_to_file(sl)
else
read_words_to_file(sl)
end
else
case addr_type
when :bit
read_coils(sl)
when :int
read_registers(sl, :int => true)
when :word
read_registers(sl)
when :float
read_floats(sl)
when :dword
read_dwords(sl)
end
end
end
end
end
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#nice_float(str) ⇒ Object
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# File 'lib/modbus-cli/read_command.rb', line 131
def nice_float(str)
m = str.match /^(.*[.][0-9])0*$/
if m
m[1]
else
str
end
end
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#read_and_unpack(sl, format) ⇒ Object
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# File 'lib/modbus-cli/read_command.rb', line 106
def read_and_unpack(sl, format)
read_data_words(sl).reverse.pack('n*').unpack("#{format}*").reverse
end
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#read_coils(sl) ⇒ Object
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# File 'lib/modbus-cli/read_command.rb', line 68
def read_coils(sl)
data = read_data_coils(sl)
read_range.zip(data) do |pair|
puts "#{ '%-10s' % address_to_s(pair.first)} #{'%d' % pair.last}"
end
end
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#read_coils_to_file(sl) ⇒ Object
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# File 'lib/modbus-cli/read_command.rb', line 58
def read_coils_to_file(sl)
write_data_to_file(read_data_coils(sl))
end
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#read_data_coils(sl) ⇒ Object
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# File 'lib/modbus-cli/read_command.rb', line 118
def read_data_coils(sl)
result = []
read_range.each_slice(MAX_READ_COIL_COUNT) do |slice|
result += sl.read_coils(slice.first, slice.count)
end
result
end
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#read_data_words(sl) ⇒ Object
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# File 'lib/modbus-cli/read_command.rb', line 111
def read_data_words(sl)
result = []
read_range.each_slice(MAX_READ_WORD_COUNT) {|slice| result += sl.read_holding_registers(slice.first, slice.count) }
result
end
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#read_dwords(sl) ⇒ Object
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# File 'lib/modbus-cli/read_command.rb', line 37
def read_dwords(sl)
dwords = read_and_unpack(sl, 'N')
(0...count).each do |n|
puts "#{ '%-10s' % address_to_s(addr_offset + n * data_size)} #{'%10d' % dwords[n]}"
end
end
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#read_floats(sl) ⇒ Object
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# File 'lib/modbus-cli/read_command.rb', line 30
def read_floats(sl)
floats = read_and_unpack(sl, 'g')
(0...count).each do |n|
puts "#{ '%-10s' % address_to_s(addr_offset + n * data_size)} #{nice_float('% 16.8f' % floats[n])}"
end
end
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#read_range ⇒ Object
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# File 'lib/modbus-cli/read_command.rb', line 126
def read_range
(addr_offset..(addr_offset + count * data_size - 1))
end
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#read_registers(sl, options = {}) ⇒ Object
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# File 'lib/modbus-cli/read_command.rb', line 44
def read_registers(sl, options = {})
data = read_data_words(sl)
if options[:int]
data = data.pack('S').unpack('s')
end
read_range.zip(data).each do |pair|
puts "#{ '%-10s' % address_to_s(pair.first)} #{'%6d' % pair.last}"
end
end
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#read_words_to_file(sl) ⇒ Object
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# File 'lib/modbus-cli/read_command.rb', line 54
def read_words_to_file(sl)
write_data_to_file(read_data_words(sl))
end
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#write_data_to_file(data) ⇒ Object
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# File 'lib/modbus-cli/read_command.rb', line 62
def write_data_to_file(data)
File.open(output, 'w') do |file|
file.puts({ :host => host, :port => port, :slave => slave, :offset => address_to_s(addr_offset, :modicon), :data => data }.to_yaml)
end
end
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