5
5.6
Net data (PKW and PZD area)
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SIMODRIVE 611 universal Description of Functions (FBU) – 04.05 Edition
The master transfers a task to a slave and repeats this task for at least
as long as the associated response is received from the slave.
The slave provides the response until the master has formulated a new
task.
For responses, which include parameter values, the slave always cycli-
cally responds with an updated value. This involves all responses to the
tasks ”request parameter value” and ”request parameter value (array)”.
If tasks cannot be executed, the slave responds as follows:
Outputs a response ID = 7
Outputs an error number in word 4 of the parameter area
Table 5-31
Error IDs for ”DP slave 611U”
Fault
ID
Error cause
0
Illegal parameter number (the parameter does not exist)
1
Parameter value cannot be changed
(Parameter can only be read or is write protected)
2
Upper or lower value limit exceeded
3
Incorrect sub–index
4
No array (parameter does not have any sub–parameter)
5
Incorrect data type (is not required for the type conversion)
6 to 19
not required
20 to 100
Reserved
The data type, assigned to the parameter must be written into the para-
meter value via the PKW mechanism (refer under data type in the pa-
rameter list in Chapter A.1).
Table 5-32
Data types
Data type for
”DP slave 611U”
Explanation
Data type for
SIMATIC S7
Integer16
Integer number, 16 bit
INT
Integer32
Integer number, 32 bit
DINT
Unsigned16
Integer number without sign
(unsigned) 16 bit
WORD
Unsigned32
Integer number without sign
(unsigned) 32 bit
DWORD
Floating point
Floating–point number
REAL
How is a task
executed?
Fault evaluation
Data types
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