1. Siemens Step 7 Project with Controllere in 7 Steps: Step 1
click on the project assistant to create a new project
select the correct CPU
finish the assistant
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2. Siemens Step 7 Project with Controllere in 7 Steps: Step 2
select Hardware configuration in SIMATIC Station
double click on insert DPMaster
Define a DP line by clicking on New
close all windows by clicking on OK
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3. Siemens Step 7 Project with Controllere in 7 Steps: Step 3
select Profibus DP in hardware config., then aditional field devices, gateways and ASi-DP- Controller e
drag the device with the mouse to the profibus line and drop it there
Define a DP address
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4. Siemens Step 7 Project with Controllere in 7 Steps: Step 4
drag modules to the module list: modules starting with 1 in the first line, with 2 in the second...
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5. Profibus DP Gateway Digital I/O´s ( module 1-4 )
The same structure of data for modules 1..4
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6. Profibus DP Multiplexed Analog Data (module 5+6)
2 words
per module:
Example: to read channel 2 of slave 17 / master 1, write to module 5:
to first word ( 16#5102 )
response in module 5 (2 words): 16#5142, 16#<analog input value>
(the „4“ [bit 6 in byte 2] indicates valid value)
to write „1024“ channel 1 of slave 18 / master 1, write to module 6:
16#5201 , 16#0400 (=1024)
response in module 6: 16#5201 , 16#0400
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7. Profibus DP PLC reads analog multiplexed input (module 5)
From PLC to
ControllerE:
From
ControllerE
to PLC
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8. Profibus DP PLC writes analog multiplexed output (module 6)
From PLC to
ControllerE:
From
ControllerE
to PLC
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9. Profibus DP Command Channel (module 7)
Target slave is addressed like analog multiplex slave :
response:
if execution was ok, byte 1 and
byte 2 are reflected and
byte 3 (4) contains result or
reflected command parameter
If not ok, bit 7 of command byte
is set. Byte 3 contains error code.
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10. Siemens Step 7 Project with Controllere in 7 Steps: Step 5
switch the PLC in RUN-P mode
store the configuration
download the con-figuration to the PLC
run the project in the PLC; it may be necessary to reset the PLC by setting the switch to stop and run again
an error is signallized by a red sign
refresh the screen with F5
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11. Siemens Step 7 Project with Controllere in 7 Steps: Step 6
setup of parameters is only possible in offline mode
double click on slave opens properties where you have to select parameters
values can be changed by a double click on the parameter
the pop up window shows the options of the particular parameter
enable extended profibus diagnostics, download it and reset the ControllerE
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12. Profibus DP Profibus Setup (Parameter)
Profibus parameters can be set up at configuration of Profibus master. At „Power On“ they are transmitted to controllerE.
The parameters are used to
enable the transfer of AS-i paramter to the slaves
project those AS-i parameters
enable extended Profibus diagnostic functions
configure the analog data area for parallel transmission
In most cases the parameters can be selected via a menu. The meaning of the parameters is indicated there.
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13. Profibus DP Device Parameter (manual setup)
Byte : 16#80, 16#00, 16#00, 16#00 (fixed)
Byte 5: : 16# AE (fixed) indicates begin of analog input area
Byte : 16#41, 16#42, 16#43.. Define first, second, third Address of slave to be transmitted in module 10
Format of Address as with module 5,6,7,8
16#4A means Slave 10 of master 1
Byte 21 : 16#AA (fixed) begin of analog output area
Byte : 16#51, 16#52, ...
Address of slave to be transmitted in module 11
Byte 37 : Bit 5 = 1 enables extended diagnostics of AS-i via Profibus Bit 4 = 1 enables parameter download Bit 0..3 predefined parameter for Slave 1 Master 1
Byte : predefined parameters for AS-i Slaves (2 slaves per byte)
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14. Siemens Step 7 Project with Controllere in 7 Steps: Step 7
if extended diagnostics are enabled in the profibus parameters AS-i diagnostics are shown in online mode
open the device information window with a double click on the slave icon
in the slave diagnostics you can see text messages explaining the error state of the AS-i line
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15. Profibus DP Diagnostics
The first byte of module 1 and of module 2 contains general master flags of master 1 and master 2
To get details the command channel can be used.
The AS-i diagnostics via extended Profibus Diagnostics in an acyclic data service. It can be enabled by Profibus parameters
The Profibus parameter byte 32 enables diagnostcs and AS-i parameters and contains the AS-i parameter for slave 1(A) of master 1
The default value is 16#0F
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16. Profibus DP Diagnostics
62 Bytes Diagnostics = 6 byte standard + 56 bytes extended
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17. Profibus DP extended Diagnostics
LAS (List of activated slaves),LCE (List of configuration errors) and LPF (List of periphery faults) have the same structure
example: List of configration errors
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18. Profibus DP extended Diagnostics
The diagnostic data are transmitted from ControllerE to the DP-Master if a new error occures or one error disappers
An AS-i error does not stop the application on DP-Master
The diagnostics for every slave can be
displayed at DP-master
handled by PLC program
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