Fastech Ezi-IO EtherCAT DA, Руководство пользователя

Страница: 31 / 52

-31-
Functions
Chapter 9.
9.1 Activating Channels
You can select the channels of Ezi-IO EtherCAT DA to use and activate them.
Deactivated channels ouput 0 [V] through the voltage output pins and 0 [mA] through the current otuput pins.
* Change in the setting for each channel is updated after the reboot.
To activate a channel to use, set the value of Analogue Output Available Channel Choice Object (2300h). Refer to
10.6.1 Object 2300h: Analogue Output Available Channel Choice for detailed information.
9.2 Output Ranges
Ezi-IO EtherCAT DA supports 4 different ranges of voltage output (0~5 [V], 1~5 [V], 0~10 [V], and -10~10 [V])
and two different ranges of current output (0~20 [mA] and 4~20 [mA]). For each output range, you can use max.
5% extended range of output with the user calibration function.
If the digital data is out of range, it is converted to the minimum or maximum analogue signal.
* Change in the setting for each channel is updated after the reboot.
Data Conversions for Output Ranges 9.2.1
9.2.1.1. 0~5 [V] Voltage Output
In the voltage output range, the digital data 0~25,000 is converted to 0~5 [V] output. Actually, the digital data -
1,250~26,250 is converted to -0.25~5.25 [V].
If the digital data is greater than 26,250, it outputs 5.25 [V]. Or if the digital data is less than -1,250, it outputs -
0.25 [V].
The following formula is used when converting digital data to analogue signals.
Analogue Output[V] =
5
25000
× Digital Data
Figure 9-1. Data Conversion for Output Range 0 ~ 5 [V]
Digital Data
Voltage
5.25 V
25000 26250
0
-1250
-0.25 V
5 V