20 | XIO USER MANUAL | 2106424MNAB
All ports can be configured for any desired connection based on field
requirements. A Network ports are not restricted to WAN or field LAN connections. B Network ports
are not restricted to local field connections. Configuration of the associated interface
s is flexible.
-2 above provides only basic examples for the intended use of the ports. For additional
Ethernet connections, refer to section 9 Ethernet connectivity scenarios, or click Help
Networking tab when connected to the device with the user interface (PCCU32).
2.2.2 TFIO expansion interfaces
The XIO provides two interfaces to add modular I/Os. The XIO supports up to 22 TFIO modules.
The XIO uses an independent bus to communicate with the modules. Totalflow has an I/O protocol to
exchange information between the modules and the XIO. The bus operates in a master/slave mode, with
the main board acting as master.
The TFIO modules are DIN rail mountable and employ contact technology for field wiring. The modules
interconnect to each other to provide the necessary power and interface signals along the bus.
The TFIO modules are hot-pluggable and can be inserted, replaced or removed during the normal
operation of the device with no restart required. The system will detect any changes to the modules on
the TFIO bus and the module states can be verified with PCCU.
DANGER – Serious damage to health / risk to life. Explosion Hazard: Do not connect or
disconnect TFIO modules, connectors or their terminations while energized unless the area is
known to be non-hazardous.
Power compatibility for TFIO modules depends on module type:
− Older green modules must only use 12 Vdc.
− M2 modules and newer grey modules can use 24 Vdc.
− A combination of green modules, and M2 modules or grey modules, must only use 12 Vdc.
Figure 2-8
shows the location of the XIO TFIO connectors for attachment of the TFIO Modules. All XIOs
and TFIO modules support a male TFIO connector on the left and a female connector on the right (not
visible in the illustration). A TFIO module can be attached to either side of the XIO. The location depends
on the location of the XIO and the space on DIN rails inside an enclosure. See
Figure 2-4 which shows an
XIO with two modules attached inside an enclosure.
Figure 2-8: TFIO module connections to XIO
All modules have four LED lights, a manual reset button, and a selectable address from zero through
seven (Figure 2-9). The faceplate of each module shows:
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