Optional Totalflow Input/Output Modules; Figure 20: Xrc G4 6890 With Optional Keypad - ABB XSeriesG4 User Manual

15.85
G4
XRC
G4
Figure 20: XRC 6890 with optional keypad

Optional Totalflow input/output modules

In addition to Totalflow's enhanced on-board I/O capabilities, the hardware functionality of the XSeries can be extended in a
flexible and friendly way by adding modular I/O as needed (see Figure 21). Totalflow I/O (TFIO) modules are designed to
accommodate low power, harsh environments and economical cost requirements. The system automatically recognizes the
module types and configures the I/O Scanner subsystem accordingly.
G4 2
The modules are interfaced to the XRC board by an I C bus. On top of this bus, Totalflow has implemented an efficient I/O
G4
protocol to exchange information between the modules and the XRC board. The bus operates in a master/slave mode, with
the main board acting as master.
22