Mitsubishi MELSEC-WS series, User Manual

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Chapter 12
91
Technical data
12
Technical data
12.1 Response times of the MELSEC-WS safety
controller
In order to calculate the response times of a MELSEC-WS safety controller, all paths
have to be taken into consideration.
Fast Shut Off
The Fast Shut Off function can be realized on a single WS0-XTIO module. A response
time of 8 ms can be reached this way.
The Fast Shut Off function has only an effect on the inputs and outputs of the same
WS0-XTIO module.
Flexi Link
The response time in a Flexi Link system is increased for a remote input compared
to a local input by 4.5 ms + 2 × logic execution time of the remote Flexi Link station.
Flexi Line
The response time in a Flexi Line system is increased for a remote input by
the input time of the remote station (E1 to E4 from Table 53),
the logic response time of the station that evaluates this input (item 2.a from Table
53)
and
N × (10 ms + 2 × Flexi Line update rate)
Where N = the number of connection segments between the stations.
If the Flexi Line function is used in a station, the response time is increased by the
logic execution time of this station.
Figure 28:
Response times within a
MELSEC-WS safety
controller
Note