System Overview - GE RSTi-EP User Manual

1.2 System Overview

The modular RSTi-EP system supports common fieldbus systems and conforms to IEC 61131-2. Each
station is assigned a bus address in the fieldbus structure. Only the network adapter is fieldbus-
specific; the I/O modules are independent of the fieldbus.
Up to 64 active I/O modules can be combined in a RSTi-EP station. The largest expansion possible
depends on the maximum amount of data transmitted by the selected fieldbus, in particular the
configuration, parameter, or process data for the module types provided.
The following components belong to the RSTi-EP product series:
•
Fieldbus network adapter (gateway): Head station for converting the respective fieldbus
protocol on the RSTi-EP system bus
•
Active I/O modules:
o Modules with digital input (DI) or digital output (DO) with 2, 4, 8 or 16 channels
o Modules with analogue input (AI) or analogue output (AO) with 4 or 8 channels
o Pulse width modulation modules (PWM)
o Digital counter modules (CNT)
•
Passive I/O modules (no fieldbus communication)
o 24 V power-feed modules (PF) for input or output current
o Potential distribution modules (AUX)
o Empty modules acting as placeholders (ES)
•
Functional safety modules
o Safe power-feed modules (EP-19xx) 24 V for output current, providing one or two
inputs (with two channels each) for safety circuits
•
Mechanical fixing elements
o End bracket
o End plate
GFK-2958E RSTi-EP User Manual
Chapter 1: Introduction
8