ABB AC 800M - Page 166

I/O Systems Section 3 Configuration
166 3BSE036351-510 A
FF linking devices operate as gateways between the AC 800M and the field devices
on the H1segments both for the configuration data of the field devices and for the
process data which is exchanged cyclically between AC 800M and the field devices.
Figure 58. Example of system structure for FOUNDATION Fieldbus HSE