Mitsubishi MELSEC-WS series, User Manual

Page: 99 / 152

Chapter 12
96
Technical data
Example 2:
Calculation of the response time for a MELSEC-WS safety controller:
Flexi Link Station A
Logic execution time = 4 ms
Occurrence In1: Digital inputs Occurrence Out2: Output to EFI device
General Tactile sensor 0 ms If EFI functions are
used via SICK EFI-
compatible devices
Response time of the
message receiver (see table
below for Flexi Link station B)
General Input processing time 6.5 ms Constant (Flexi Link) 4 ms
When On/Off
filter
8.0 ms –
When X1 … X8
is connected at
the test output...
–
Total In1 6.5 ms Total Out2 4 ms
Evaluation
1. Inputs
Response time of the considered input in the signal
path
In1 6.5 ms
2. Logic
Response time of the logic
2 × logic execution time 8.0 ms
Delay through logic application –
3. Outputs
Response time of the considered output in the signal
path
Out2 4.0 ms
Total response time 18.5 ms
Flexi Link Station B
Logic execution time = 8 ms
Occurrence In2: Input from EFI device Occurrence Out1: Digital outputs
If EFI functions
are used via
SICK EFI-
compatible
devices
Response time of the EFI
data source (see table
above for Flexi Link station
A)
18.5 ms General
Response time of the
actuator (Robot response
time)
40.0 ms
Constant (Flexi Link) 0.5 ms General Output processing time 4.5 ms
Total In2 19.0 ms Total Out1 44.5 ms
Evaluation
1. Inputs
Response time of the considered input in the signal
path
In2 19.0 ms
2. Logic
Response time of the logic
2 × logic execution time 16.0 ms
Delay through logic application –
3. Outputs
Response time of the considered output in path 2 Out1 44.5 ms
Total response time (remote input to local output) 79.5 ms
Table 56:
Example for the calculation of the response time of a remote input in a MELSEC-WS safety controller
Figure 31:
Response times within a
MELSEC-WS safety
controller