18
Offline Configuration
The AI blocks are divided into two groups (AI Transducer Blocks) which are
each assigned to one measuring module. This allows control of functions in the
measuring modules. If there is only one measuring module, both AI TBs can be
assigned to the same module so that they can output more measured values
cyclically. In this exemplary configuration there is a PH 3400-032 module in
slot [I], an OXY 3400-062 module in slot [II], and the COMFF 3400-085 module in
slot [III].
AI TB1 configuration (Administrator)
Return
7.03 pH
25.6 °C
Analog Input AI 2
pH
°C
mV
°F
Analog Input AI 1
Measuring module
Analog Input AI 4
Analog Input AI 3
Module PH 3400-032
You can assign individual process variables from the selected measuring
module to the different AI channels.
Example 1:
AI-TB1 is assigned to the pH 3400-032 module,
therefore all process variables of the pH
module are available for AI1 to AI4.
AI TB2 configuration (Administrator)
Return
0.03 %Air
25.6 °C
Analog Input AI 6
%Air
°C
pL
mg/l
Analog Input AI 5
Measuring module
Analog Input AI 8
Analog Input AI 7
OXY 3400-062 module
Example 2:
AI-TB2 is assigned to the OXY 3400-062
module,
therefore all process variables of the Oxy
module are available for AI5 to AI8.
Bus communication on the Foundation Fieldbus can only function properly
when during online configuration the blocks in the control system are set in
accordance with the AI-TB configurations selected in the device configuration.
The modular Protos does not allow permanent assignment of process variables
to AIs - any available module can be located in one of the three slots, which
cannot be recognized from the control system.
Therefore you cannot preconfigure the device offline per DD from the control
system.
