8 Operation at Use of a PC
8.3 Configuration of the Device
217SICAM Q100, 7KG95xx, Device Manual
E50417-H1040-C522-A4, Edition 03.2018
8.3.7.5.3 Commissioning Notes
If the SICAM I/O Unit subdevices are connected correctly to the SICAM Q100, the Ethernet communication pa-
rameters are set correctly in both devices (the SICAM Q100 and the SICAM I/O Unit), and communication in-
terruptions still occur (sporadically) then the communication supervision times have to be adapted.
Higher network load or use of different communication features simultaneously in the device may be the reason
for the communication interruptions. In this case, increase the communication supervision times in the devices
as follows:
Calculation
The relationship of the supervision times in the SICAM Q100 and the SICAM I/O Unit results from:
ResponseTimeout [ms] (CommunicationSupervisionTime [ms] - 20 [ms]) / 2
Or in reverse order:
CommunicationSupervisionTime [ms] (2 * ResponseTimeout [ms]) + 20 [ms]
Parameterization Example
✧ Change the Communication supervision time in the SICAM I/O Unit to 200 ms for the reasons mentioned
above (ref. to chapter 8.3.7.5.2.)
According to the formulas above a Response timeout of 90 ms is calculated.
✧ Change the parameter in the SICAM Q100 for example to: Response timeout = 60 ms (ref. to
chapter 8.3.7.5.1)
NOTE
The parameters Response timeout in the SICAM Q100 (see table 8-30) and Communication supervision time
in the SICAM I/O Unit subdevices (see table 8-31) must always be changed together.
If two SICAM I/O Unit subdevices are used then the Response timeouts for both devices have to be set iden-
tically.
NOTE
Note that the communication supervision times are entered in the user interface (HMI) in multiples of 10 ms.
For the example above enter the values 20 for the Communication supervision time in the SICAM I/O Unit and
6 for a Response timeout in the SICAM Q100.
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