User manual
IEC61131 User and Reference Manual
April 22, 2008
167
din5414
Digital input module 5414
Description
The din5414 I/O module provides sixteen I/O channels from 5414 Digital Input hardware.
Data for each of the sixteen I/O channels may be connected to user-defined variables with
the I/O connection editor. Connected variables are updated continuously with data from the
digital inputs.
The module_address parameter defines the module address of the sp5414 I/O module.
The address on the module is selected via dipswitches on the module. Set the din5414
module_address to match the address switches on the 5414 Digital Input hardware.
A maximum of sixteen 5414 I/O type modules may be added to a system.
To set the module address, click the module address icon and then select the set / channel
parameter command from the Edit menu. The I/O Board parameter dialog is opened as
shown below.
Enter the module address, 0 through 15, in the Value: entry field and click OK.
The acdc parameter sets the analog input type for analog input channel 1. There are four
input types available.
An acdc of 0 sets the input to measure DC input signals (default).
An acdc of 1 sets the input to measure AC input signals.
To set the acdc parameter, click the acdc icon and then select the set / channel parameter
command from the Edit menu. The I/O Board parameter dialog is opened as shown below.
Enter the acdc type, 0 or 1, in the Value: entry field and click OK.
The scanfreq parameter sets the input scan rate for the digital inputs. The scan rate
selection is not critical but AC noise rejection is improved at the correct frequency. If the
module is used in a DC environment, the 60 Hz setting will yield slightly faster response
time.
A scanfreq value of 0 synchronizes the input scanning to 60Hz.
A scanfreq value of 1 synchronizes the input scanning to 50Hz.
To set the scan_freq parameter, click the scan_freq icon and then select the set / channel
parameter command from the Edit menu. The I/O Board parameter dialog is opened as
shown below.