Siemens SIMATIC FM 353 Manual page 147

Table 6-15
Block
POS_DIAG
POS_MSRM
Processing times for the blocks when used in a distributed configuration
PROFIBUS DP), taking the following example
The specified times are rounded.
Structure: CPU 315-2DP, IM 153-2, FM 353 in the simulation mode
User cycle time: 5 ms
FM cycle: 2 ms
Baud rate: 1.5 MB
Table 6-16
No.
0 POS_CTRL
1 POS_CTRL
2 POS_CTRL
3 POS_DIAG
Several cycles are required to read or write data via the relevant requests.
Response time for start signals to a distributed FM (PROFIBUS DP)
Table 6-17
From the view of the CPU:
from calling the block
Start "Jog"
Start "MDI"
FM 353 Stepper Drive Positioning Module
6ES7 353-1AH01-8BG0
Processing times for the blocks, continued
Transfer
Read process and diagnostic data
Read measured values
Processing times for distributed blocks
System data
Block transfer
Control/checkback
signals
Write request
Read request
Read
Response times for start signals
Response at the output of
the FM (axis traverses, incl. the FM (axis traverses incl
FM response time)
Programming the Technological Functions
Cycle 1
3.2 ms
3.6 ms
Transfer time in
the range from ...
to
1.1...1.5 ms
30...40 ms
10...20 ms
2.1...2.7 ms
Response time in the
to
range from ... to
Cycle 2 Cycle 3
− −
Average transfer
time
1.3 ms
35 ms
15 ms
2.4 ms
8...13 ms
10...15 ms
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