CIO DESCRIPTION
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5. CIO – analogue inputs and binary outputs
CGU 04i module is equipped with user interface CIO for analogue signal reception
and processing and control (settings) of binary signals. User is provided with 5 adjustable
inputs/outputs located on CIO connector at the front panel. More about CIO 2 modules see
[4]
.
5.1. Description of I/O signal evaluation and reception
There are five signals linked to CIO that are possible to process and control by setting
up CGU 04i module. These signals can be controlled remotely, or their values can be sent
in data form to a remote point of data network.
5.1.1 Analogue input
Voltage is checked every 100 ms from the analogue input, transferred to digital ten-bit
value and adjusted by calibration constant. The value is further average-computed according
to user interface and saved in the computer memory. Basic input voltage range is 0- 5 V.
5.1.2 Binary output
Binary output is implemented by a transistor with open collector connected to I/O
signal. When inactive (log 0) the transistor does not conduct and acts like open switch. When
active (log 1) the transistor acts like switch connecting I/O signal to the ground (GND). In both
cases the I/O value is measured as an analogue input. The status of switched circuit is being
checked.
Maximum switched output current is 500mA. Maximum voltage at transistor collector
equals the supply voltage of CGU 04i module.
5.1.3 I/O signals inside CGU 04i
Scheme of connection I/O signals
