Fig. 18 Ep1957 - Delete Project Data - Beckhoff EP1957-0022 Operating Instructions Manual

Fig. 18: EP1957 - Delete project data
5.3.3.1 Project design limits of EP1957
Project design limits
The maximum project design size for EP1957 is determined by the available memory. This is
managed dynamically. The values specified in the following table are therefore only guide values
and may differ from the actual values, depending on the safety project.
Execution time of the logic function
The execution time of the logic program - with identical logic program - will typically be longer compared to
the EL6910, since the safe I/O signals must be processed additionally. This also has a corresponding effect
on the processing of the I/O signals, since with increasing project size these can only be evaluated with a
lower frequency.
Process image size
TwinSAFE connections
Safe data per TwinSAFE connection maximum 126 byte (telegram length 255 byte)
TwinSAFE blocks
TwinSAFE groups
TwinSAFE user
Standard PLC inputs
Standard PLC outputs
Project development
TwinCAT 3.1 Build 4022.25 or newer is required to use the internal logic functions. If the EP1957 is used as
TwinSAFE slave with the default project, at least an EL6910, EK1960 or newer logic component is required
as TwinSAFE master.
EP1957-0022 and EP1957-2222
NOTE
max. 1486 byte per data direction
(Maximum memory size 0x1E00 for 3 buffers, ie with the same size
of input and output process data, a maximum size of 1280 bytes
per data direction is possible. Only straight start addresses are
possible, so fill bytes must be taken into account.)
128 max. (up to 255 CRCs in total; 1 CRC is required for a
TwinSAFE connection with 1 or 2 byte safe data.)
maximum 512 (For using ESTOP function blocks with complete
input and output mapping. Other function blocks can lead to a
smaller maximum number.)
128 max.
40 max.
dynamic (memory-dependent), max. 1483 byte
dynamic (memory-dependent), max. 1483 byte
NOTE
Version: 2.0.0
Operation
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