Technical data

66 • BACnet/IP Controller 750-830
Data Exchange
WAGO-I/O-SYSTEM 750
BACnet/IP Controller
3.1.6.2.1 Addressing of Bus Modules
Addressing first references complex modules (modules that occupy several
bytes) in accordance with their physical order downstream of the fieldbus con-
troller, i.e., they occupy addresses starting from word 0.
Following these is the data for the remaining modules, compiled in bytes (mod-
ules that occupy less than one byte). In this process, byte by byte is filled with
this data in the physical order. As soon as a complete byte is occupied by the
bit-oriented modules, the process begins automatically with the next byte.
Note
For the meaning of input and output bits or bytes of the individual bus mod-
ule please refer to the corresponding bus module description.
Note
If a node is changed or expanded, this may result in a new process image
structure. In this case, the process data addresses also change. In case of an
expansion, the process data of all previous modules has to be taken into ac-
count.
Tab. 3-5: Data width for bus modules
Data width ≥ 1 word (channel): Data width = 1 bit (channel):
Analog input modules Digital input modules
Analog output modules Digital output modules
Input modules for thermocouples Digital output modules with diagnostics (2 bits/channel)
Input modules for resistor sensors Supply modules with fuse carrier/diagnostics
Pulse width output modules Solid-state load relays
Interface modules Relay output modules
Up/down counters
Bus modules for angle and distance measurement