15.1.15
echolink one2PROFINET V. 1.0
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Softing Industrial Automation GmbH
Implemented protocols in echolink one
3.
Process data
Data structure
8.8.2
Data structure Application side:
According to Modbus RTU Master definition.
Supported functions:
Read coil status FC1
(No. of Points = Bit)
Read input status FC2
(No. of Points = Bit)
Read multiple register FC3
(No. of Points = Word)
Read input registers FC4
(No. of Points = Word)
Force single coil FC5
(No. of Points – not used = fix 1 Bit)
Preset single register FC6
(No. of Points – not used = fix 1 Word)
Force multiple coils FC15
(No. of Points = Bit)
Preset multiple register FC16
(No. of Points = Word)
Note:
status and coil = 1 Bit, register = 16 Bit.
FC 1 + 2 as well as FC 3 + 4 are principally the same, the only difference is the definition of the
start address.
At FC1 it starts at Null, at FC2 at 10 000.
At FC3 it starts at 40 000, at FC4 at 30 000
