Advantech Data Acquisition Modules ADAM 4000 - Manual (Page 49)

I/O Modules
3-22 ADAM 4000 Series User’s Manual
3.6 ADAM-4016 Analog Input/Output Module
A strain gauge input module uses a microprocessor-controlled
integrating A/D converter to convert sensor voltage or current signals
into digital data for load cell and stress measurement. The digital data
are then translated into either, two’s complement hexadecimal format or
percentage of full-scale range (FSR) according to the module’s
configuration. When prompted by the host computer, the data are sent
through a standard RS-485 interface.
The strain gauge input module offers signal conditioning, A/D
conversion, ranging, and RS-485 digital communication functions.
They protect your equipment from power surges at the ground terminal
by providing opto-isolation of the A/D input and up to 3000 V
DC
transformer based isolation.
Excitation Voltage Output
A strain gauge input module can supply single channel voltage
output for excitation. The module receives digital input from the host
computer, and the format of the data is engineering units. It then uses
its microprocessor-controlled D/A converter to convert the digital data
into output signals.
Strain gauge input modules protect your equipment from power
surges at the ground terminal by providing opto-isolation of the D/A
output and up to 3000 V
DC
transformer-based isolation.
Digital Outputs
A strain gauge input module also contains four digital outputs.
Outputs are open-collector transistor switches that may be controlled by
the host computer. They can control solid-state relays which can be
applied to heaters, pumps, and other electrical controlled equipments.
Alarm signaling
Strain Gauge input modules include High and Low alarm functions.
High and Low alarm limits may be downloaded into the module’s
EEPROM by the host computer.
The alarm functions can be enabled or disabled remotely. When the
alarm function is enabled, both Digital Output channels are used to
indicate the High and Low alarm states. Digital Output channel 1 (DO1)
equals to High alarm state and Digital Output channel 0 (DO0) equals
to Low alarm state. The High and Low alarm state can be read at any
time by the host computer.