Figure 22 - I/O Data Communication Through Backplane Bus - Honeywell 2MLL-PSRA User Manual

I/O data Communication
1. Expansion I/O modules are communicating with master by using backplane bus.
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Maximum TRX data is 244 byte.
Figure 22 – I/O data Communication through backplane bus
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Slave I/F module refreshes data in TRX buffer through CPU module's I/O image
area and CPU module refreshes data in I/O image area through I/O module and
backplane bus.
R210 Pnet I/F Module 2MLL-PSRA, 2MLL-PSEA User's Guide
November 2011
6. Profibus-DP Communication
Honeywell
6.3. Basic Performance
71