Siemens SINUMERIK 840D Description Of Functions page 192

3 Safety-Related Functions
3.12 SI I/Os using fail-safe modules connected to PROFIBUS DP (840D from SW 6.3.30)
Parameterizing errors The following parameterizing errors are detected at run-up and the appropriate
alarms displayed:
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Assignment example Assignment example based on two ET 200S F-DI modules "4/8 F-DI 24V":
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The F target addresses (1022 and 1021) of the configured F-DI modules are
entered into the NCK machine data:
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Using the NCK machine data:
MD 10388: $MN_PROFISAFE_IN_ASSIGN[0] and [1]
the F useful (net) data are assigned:
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SINUMERIK 840D/SIMODRIVE 611 digital SINUMERIK Safety Integrated (FBSI) - Edition 11.03
refer to each other via their indices.
Bit limits interchanged (start value > end value)
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Bit values greater than max. SGE/SGA number (> 64)
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Number greater than max. F useful data bits (end value – start
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1)
value + 1> 8)
No SPL assignment parameterized (start and end value == 0)
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Incorrect SPL assignment (start or end value == 0)
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SPL-SGE multiple assignment (F module and DMP module)
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F module: MD 10388 $MN_PROFISAFE_IN_ASSIGN
DMP module: MD 10390 $MN_SAFE_IN_HW_ASSIGN
1) Alarm: 27203 "PROFIsafe: MD Number [ Index ]: SPL assignment
incorrect"
2) Alarm: 27204 "PROFIsafe: Dual allocation MD Number [ Index ] -
MD Number [ Index ]"
Note
If, via NCK machine data:
•
MD 10388: $MN_PROFISAFE_IN_ASSIGN[Index]
is incorrectly assigned more useful data bits of an F-DI module of the SPL
SGEs than are transferred to the relevant bits defined by the parameterization
of the F/DI module, this cannot be detected by the NCK.
Example:
For 2v2 parameterization of all of the channels of the F module:
ET 200S F, F-DI module: 4/8 F-DI 24VDC
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the 8 transferred useful data bits contain only 4 actually relevant bits (bit 0 to
bit 3). In this case, bit 4 to bit 7 are always 0.
The F-DI modules have been assigned the F target addresses: 1022 and
1021.
For the parameter: "2v2" was selected in each case for the parameter:
"encoder analysis", so that only bits 0 to 3 are used to transfer relevant
data in the F useful data. A "0" is always transferred in the other F useful
data.
MD 10386: $MN_PROFISAFE_IN_ADDRESS[0] and [1].
F useful data of 1022, bit 0 to bit 3 for SPL-SGE[1] to SPL-SGE[4]
F useful data of 1021, bit 0 to bit 3 for SPL-SGE[5] to SPL-SGE[8]
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