1. INTRODUCTION
1.1.3.5. I/O Modules
The I/O modules are plugged into the racks for adapting the different types of field signals to the CPU or fieldbus heads.
Nexto Series supports a wide variety of I/O types and operating ranges, thus covering all the typical needs for an automation
system. The Nexto modules are hot-swappable, meaning that they can be unplugged without turning the system off or removing
the power and the modules that make part of Nexto Jet solution does not support this functionality. Due to isolation features,
some I/O modules must be supplied by external power supplies.
1.1.3.6. Fieldbus Head
The fieldbus heads connect Nexto Series modules to different fieldbus networks. They can communicate with CPUs from
different vendors, supporting several protocols like MODBUS, PROFIBUS-DP and others.
1.1.3.7. Fieldbus Interface
The fieldbus interfaces are fieldbus master nodes and allow the access to remote modules or other equipment based on
major industry fieldbus, like PROFIBUS-DP, MODBUS and others. The fieldbus interfaces are plugged into local racks and
use two I/O module slots.
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