User manual

IEC61131 User and Reference Manual
April 22, 2008
194
ss4202
SCADASense 4202 DR I/O without digital output
Description
The ss4202 IO module is used with older SCADASense 4202 DR controllers that are not
equipped with a digital output. This module comprises three different types of I/O channels:
analog, counter, and a digital input.
The I/O hardware on older SCADASense 4202 DR‟s manufactured prior to July 2004,
consists of three analog and counter inputs, a digital input and one analog output. Each of
these types of I/O is represented as a sub module in the ss4202 I/O module. These sub
modules are named AIN for analog input channels, DIN for digital input channels and AOUT
for analog output channels.
The AIN sub-module provides three I/O channels for the analog and counter input data from
the controller I/O hardware.
 Channel 1 is the input voltage applied to the controller.
 Channels 2 and 3 are the counter inputs.
Data for each of the three 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
controller I/O hardware.
The DIN sub-module provides one channel for the digital input data from the controller I/O
hardware. Data for the I/O channel may be connected to a user-defined variable with the I/O
connection editor. Connected variables are updated continuously with data from the
controller I/O hardware.
The AOUT sub-module module provides one channel for the analog output of the controller
I/O hardware. Data for the channel may be connected to a user-defined variable with the I/O
connection editor. The analog output is updated continuously with data read from the
variable.
I/O Connection
Module address
No physical module address is required.
There is only one ss4202 module allowed per controller.
Library type
IO complex equipment
AIN sub-module
Data type
Integer / real
Channel type
Input
Number of channels
3
DIN sub-module
Data type
Boolean
Channel type
Input
Number of channels
2
AOUT sub-module
Data type
Integer / real
Channel type
Output
Number of channels
1