Specifications

Analog Output Modules
312
31007715 6/2008
STB ACO 1210 Functional Description
Functional
Characteristics
The STB ACO 1210 module is a two-channel analog output module that sends data
to two field actuators. The following operating parameters are user-configurable:
z the module’s analog output period
z the fallback states of the two analog output channels
Using the RTP feature in your NIM, you can access the value of the following
parameter:
z Analog Output Period
Refer to the Advanced Configuration chapter in your NIM manual for general
information on RTP.
Analog
Output Period
If the data to an analog output channel is not updated by the fieldbus master in a
specified number of milliseconds, the module will refresh the old data held by the
channel. The purpose of this update is to prevent the analog value from drifting in
the event that there is a long interval between data updates. The interval between
refreshes is defined as the analog output period. This period is user-configurable in
the range 5 to 255 ms.
The analog output period is configurable as a decimal or hexadecimal value in the
range 5 to 255 (0x5 to 0xFF). By default, the analog output period is 10 (0xA). If you
want to configure a different period, you need to use the Advantys configuration
software:
Note: Standard NIMs with firmware version 2.0 or higher support RTP. RTP is not
available in Basic NIMs.
Step Action Result
1 Double click on the STB ACO 1210
module you want to configure in the island
editor.
The selected STB ACO 1210 module
opens in the software module editor.
2 Choose the data display format by either
checking or unchecking the Hexadecimal
checkbox at the top right of the editor.
Hexadecimal values will appear in the
editor if the box is checked; decimal
values will appear if the box is
unchecked.
3 In the Value column of the Analog
Output Period row, enter the desired
value.
Notice that when you select the Analog
Output Period value, the max/min
values of the range appear at the
bottom of the module editor screen.
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