Siemens SIMATIC ET 200M

Functions
8.6 Isochrone mode
ET 200M
Operating Instructions, 12/2008, EWA-4NEB780600602-08
171
8.6.2 Configuring the isochrone mode
Procedure
1. Settings on the CPU:
"Object properties" of the CPU > tab "Synchronous cycle interrupts"
– Set the CPU synchronous cycle interrupt
– Select the DP master system being used
– Select the desired process image partition
– Recommendation for the delay time:
Use the default settings.
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Figure 8-21 Synchronous cycle interrupts dialog box
2. Settings on the DP master system:
"Object properties" of the DP master > tab "General" > button "Properties" > tab
"Parameters" > button "Properties" > tab "network settings" > button "Options"
– Enabling equidistance on the DP master system
– Set the length of the equidistant DP cycle (max. 32 ms)
– Set "Times Ti and To same for all slaves" (causes a synchronization of the input /
output data for the various DP slaves)
– The times Ti and To can be set separately.