Profisafe System; Profisafe Frame - Danfoss iC7 Series Operating Manual

Operating Guide | iC7-Automation Functional Safety
Watchdog time monitoring with acknowledgment.
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Codename per communication relationship.
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Cyclic redundancy check for data integrity.
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Communication over the non-safe transmission systems is called the "black channel".
Standard data Safe data
PROFisafe layer
Standard bus protocol
PROFINET IO
Figure 13: PROFIsafe Communication

PROFIsafe System

4.5.2
The drive can communicate with safety PLC via PROFINET. The exchanged data includes safety-related data and non-safe process data.
For safety-related data, it goes through the PROFIsafe frame and matches PROFIdrive format.
The drive supports PROFIsafe V2.4 and V2.6. V2.6 is forward compatible with V2.4. To provide maximum flexibility and convenience, the
GSD file contains 2 modules. Select 1 of the following modules according to the requirement to set up communication between the PLC
and drive:
Standard Telegram 30 (PROFIsafe 2.4): 3 octets CRC checksum
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Standard Telegram 30 (PROFIsafe 2.6.1): 4 octets CRC checksum
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PROFIsafe Frame

4.5.3
The PROFIsafe frame, which is exchanged between the safety PLC (F-host) and the safety follower (F-device), includes:
Safety I/O data (F-I/O), which is used to control the drive safety process.
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A status/control byte, which is used for the PROFIsafe communication.
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A CRC signature, which ensures the validity of the frame.
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S S S
F-I/O data
Maximum 13 octets
1) PROFIsafe V2.4 corresponds to 3 octets, and PROFIsafe V2.6 corresponds to 4 octets.
Figure 14: Structure of the PROFIsafe Frame (S=Standard Frame)
To indicate, monitor, and set the safety status of the F-device, see the status and control bytes descriptions in
For more details, refer to PROFIsafe – Profile for Safety Technology on PROFIBUS DP and PROFINET IO Technical Specification.
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Safe data Standard data
PROFisafe layer
Standard bus protocol
S S S
Status byte/
CRC2
control byte
1 octet 3 or 4 octets
1)
Functional Safety for Frequency Converters, Upgradable (+BEF2)
AQ319741840653en-000401 / 136R0268 |
Table 23 and Table 24.
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