Pilz PNOZ mm0p 24VDC - Manual (Page 122)

Safe Ethernet connection
Operating Manual PNOZmulti communication interfaces
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Data path 3: Control system 2 (transmitter)
Data path 3 describes the time between the signal being present in the
Safe Ethernet con-
nection output area of control system 2 and the output switching in control system 2.
If control system 2 (receiving system) is an automation system PSS 4000, you can calcu-
late the reaction time of this data path as described in the online help for PAS4000.
If control system 2 (receiving system) is a control system PNOZmulti, you can calculate the
reaction time as follows:
} Max. switch-off delay of the output (see Technical details in the operating instructions
for the respective output)
Overall reaction time
The reaction time t
React_max
from the signal changing at the input on control system 1 to the
output switching on control system 2 is calculated by adding the reaction times of the three
individual data paths.
Series connection
If several control systems are connected in series and information is channeled via several
Safe Ethernet connections, each transmission must be calculated as a standalone con-
nection (consisting of the three data subpaths) and the reaction times are added together.
Example: Input PNOZmulti base unit – Output PSS 4000 PLC
Data
path PNOZmulti PSS 4000
1 Max. input delay +
Max. cycle time of the device
2 Calculated timeout time t
SecTimeout
:
(2 x processing time for data communication t
MultiProcessing
) + (4 x task cycle time
t
PssTask
)
3 Cycle time with ext. communication t
extCo_
Task2_max
+ Reaction time of module bus
t
Task2_MBUS_max
Max. input delay PNOZmulti (see base unit's operating instructions) 4 ms
Max. cycle time of device (see base unit's operating instructions) 15 ms
Max. processing time for data communication (t
MultiProcessing
) (see operating in-
structions for PNOZmulti base unit)
50 ms
Configured task cycle time in the PSS 4000 (t
PSSTask
) 10 ms
Calculated timeout time (see Configuration in the PNOZmulti Configurator [
119] )
150 ms
t
extCo_Task2_max
(see example in the online help for PAS4000) 100 ms
t
Task2_MBUS_max
(see example in the online help for PAS4000) 15 ms
Reaction time t
React_max
= 4 ms + 15 ms + 150 ms + 100 ms + 15 ms
Reaction time t
React_max
= 284 ms