Advantech Data Acquisition Modules ADAM 4000 - Manual (Page 8)

Introduction
1-2 ADAM 4000 Series User’s Manual
1.1 Overview
The ADAM Series is a set of intelligent sensor-to-computer
interface modules containing built-in microprocessor. They are
remotely controlled through a simple set of commands issued in ASCII
format and transmitted in RS-485 protocol. They provide signal
conditioning, isolation, ranging, A/D and D/A conversion, data
comparison, and digital communication functions. Some modules
provide digital I/O lines for controlling relays and TTL devices.
Software Configuration and Calibration
By merely issuing a command from the host computer, you can
change an analog input module to accept several ranges of voltage input,
thermocouple input or RTD input. All of the module’s configuration
parameters including I/O address, communication speed, HI and LO
alarm, calibration parameters settings may be set remotely. Remote
configuration can be done by using either the provided menu-based
software or the command set’s configuration and calibration commands.
By storing configuration and calibration parameters in a nonvolatile
EEPROM, modules are able to retain these parameters in case of power
failure.
Watchdog Timer
A watchdog timer supervisory function will automatically reset the
ADAM modules in the event of system failure. Maintenance is thus
simplified.
Power Requirements
Although the modules are designed for standard industrial
unregulated 24 V
DC
power supply, they accept any power unit that
supplies power within the range of +10 to +30 V
DC
. The power supply
ripple must be limited to 5 V peak-to-peak, and the immediate ripple
voltage should be maintained between +10 and +30 V
DC
.
Connectivity and Programming
ADAM modules can connect to and communicate with all computers
and terminals. They use RS-485 transmission standards, and
communicate with ASCII format commands. The command set for
every module type consists of approximately ten different commands.