SFC fieldbus module retrofit set
Description
3.
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Profibus DP
In the GSD file for the SFC the data points are all defined as
modules. The name of each module is the same as the name of
the data point. Data points that have "RW" access rights are split
up into several modules in the GSD file.
For example: Data point "Setpoint"
Module "Setpoint_RW"Read/write module
Module "Setpoint_R"Read module
Module "Setpoint:_W" Write module
These modules are used as required to configure the input and
output data. The number and order of the process data in cyclic
data transfer depends on the modules that have been configured.
Addressing:
"Name" column in the reference list
Profinet IO
When using Profinet, all of the data points in the reference list are
transmitted using cyclic data transfer. Data points that are "R" or
"RW" are process input data and data points that are "W" or "RW"
are process output data. Data point addressing is performed using
the byte address (position) within the input or output data packet.
The configuration of the input and output data has to be in
accordance with the table.
Addressing:
Input data:
"IN-byte" column
Output data:
"OUT-byte" column
Modbus
Register
IN-
byte
OUT-
byte
Name
Length
Format
Access
Description
40001 0
Device Status
2
INT16
R
Byte 1:
Timeout counter [0-10] ; data traffic
monitoring
SFC < - > Fieldbus module
Value = 0: Communication OK
Value = 1-10: Communication error
Byte 2:
Bit0x01 - Value 1 = RS485 interrupted
communication
Value 0 = RS485 communication OK
Bit0x02 - Value 1 = valid data in input range
Value 0 = no valid data in input range
Bit0x03...Bit0x08 not used
40002 2
Measurement value
4
FLOAT R
40004 6
Measurement unit
6
ASCII
R
40007 12
Yout/Ym
4
FLOAT R
40009 16
Flow Wq
4
FLOAT R
40011 20
Flow Wq unit
6
ASCII
R
40014 26
Setpoint/Dosing factor
4
FLOAT R
40016 30
Temperature
4
FLOAT R
40018 34
Temperature unit
2
UINT16 R
0x0001 - °C
0x0002 - °F
Содержание WALLACE & TIERNAN SFC fieldbus
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