42/24-10 EN Rev. 9 Chapter 7: Gas Analyzer Configuration 7-C-15
Configuring Bus I/Os
Menu Path
MENU → Configure → System → Network → BUS IO
Figure 7-C-5
Bus I/O
Configuration
Number of Bus I/Os
Changing the number of Bus I/Os will affect the Modbus address range, Profibus
image and Ethernet linking.
Reducing the number of Bus I/Os may cause transmission errors if the settings in
the communication partners are not matched. This may also cause damage in the
function block applications.
Parameter Function Read Write Example
BUS AI Bus
analog inputs
x x for analog value input into the function block
application
BUS AO Bus
analog outputs
x – for analog value output from the function block
application
BUS DI Bus
digital inputs
x x for control of functions such as auto calibration,
measurement range control after function block
configuration
BUS DO Bus
digital outputs
x – for display of functions linked by function block
configuration, e.g. alarm signaling
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