2-1 Selecting I/O Module
To organize an ADAM-6000 remote data acquisition & control system, you need to select I/O modules to interface the host
PC with field devices or processes that you have previously determined. There are several things should be considered
when you select the I/O modules.
What type of I/O signal is applied in your system?
How much I/O is required to your system?
How will you place the I/O Modules to handle the I/O points in individual area of an entire field site.
How many ADAM-6000 I/O modules are required for distributed I/O points arrangement.
How many hubs are required for the connection of these Ethernet devices?
What is the required voltage range for each I/O module?
What isolation environment is required for each I/O module?
What are the noise and distance limitations for each I/O module?
Refer to table 2-1 as I/O module selection guidelines
Choose this type of
I/O module:
For these types of field
devices or operations
(examples):
Explanation:
Discrete input
module and block
I/O module
Selector switches,
pushbuttons, photoelectric
eyes, limit switches, circuit
breakers, proximity
switches, level switches,
motor starter contacts, relay
contacts, thumbwheel
switches
Input modules sense ON/OFF or
OPENED/CLOSED signals.
Discrete output
module and block
I/O module
Alarms, control relays,
fans, lights, horns, valves,
motor starters, solenoids
Output module signals interface with
ON/OFF or OPENED/CLOSED devices.
Analog input
module
Thermocouple signals,
RTD signals, temperature
transducers, pressure
transducers, load cell
transducers, humidity
transducers, flow
transducers, potentiometers.
Convert continuous analog signals into
input values for host device
Analog output
module
Analog valves, actuators,
chart recorders, electric
motor drives, analog meters
Interpret host device’s output to analog
signals (generally through transducers)
for field devices.
Table 2-1 I/O Selection Guidelines
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