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7 SmartWire-DT
7.2 Cyclical input and output data of the SWD stations
286
Control Relay easy800
11/11 MN04902001Z-EN
www.eaton.com
7.2 Cyclical input and output data of the SWD stations
All input and output data of the SWD stations present are stored in a data
storage area of the easy800-SWD, the so-called process image. The
maximum input data is 800 bytes and the maximum output data 642 bytes.
In all the data area must not exceed 1000 bytes. The cyclical data exchange
between the easy800-SWD and the SWD stations is implemented with a
common data telegram. The input data can consist of several bytes,
depending on the station. The input data contains information such as the
switch position or diagnostic information.
The input and output data of the stations is assigned to the bit operands or
the value operands by means of an assignment list (see easySoft-Pro Online
Help). The operands can be wired like inputs and outputs in the circuit
diagram (see
Overview of easy800-SWD bit operands
Bit operand
Function
I1 - I4
1)
Local device inputs
I5 – I12
functionless
I13
SWD line group alarm
I14
always set to 1
I15
functionless
I16
1)
group fault alarm for short-circuit on Q1 or Q2.
I17 – I99
can be assigned to input data in the assignment table
Q1/Q2
1)
local device outputs
Q3 – Q16
functionless
Q17 – Q99
can be assigned to output data in the assignment table
1) only EASY806-DC-SWD
→
Bit operand I14 on easy800-SWD is always set to 1. easy800
standard shows the status of the expansion device via I14.
easy800-SWD does not know any expansion devices and
therefore has no function.