
NA300 Series Programmable Logic Controller Technical Specifications and User Manual
1.1 Component and Structure of NA300 Hardware
System
The hardware system of NA300 series PLC consists of controller modules, sequence
of events modules, general I/O modules, communication modules, backplane and system
power supply. All modules are installed on the backplane.
Controller module: also called CPU module. It is installed on the local backplane.
Controller with a built-in 10/100 Mbps Ethernet and two serial communication
interface.The internal bus leads through the local backplane, making it a convenient
for a hot-plug operation.
SOE module: It provides digital input signal acquisition and records the sequence of
the displacement event. The resolution is 1.0ms.
General I/O module: It can be installed in the local backplane and expansion
backplane. It communicates with the controllers by high-speed internal bus.
Communication module: It can be installed in the local backplane or the expansion
backplane and used for appending other communication protocols. NA300 controller
can communicate with third party devices by RS485, PROFIBUS-DP, CAN, Ethernet,
PROFINET and so on. If NA300 control system is to provide a certain communication
function, this can be achieved by simply installing an appropriate communication
module on the backplane.
Power supply module: It is installed in the backplane, providing power supply to other
modules. The power supply to the field devices should be installed separately in order
to ensure the electrical isolation between the field and the control system.
1.2 Technical Features of NA300
CPU Module has 2 of its own independent serial ports with 2 independent / hot
backup Ethernet interface. In addition, it can support current widely used
communication protocols through communication expanding modules to interfacing
with RS485, PROFIBUS-DP, CAN, Ethernet, PROFINET, and etc
Advanced field-bus network: High speed field-bus is used for internal communication,
which is of fast rate, strong anti-interference ability and ease of expansion.
The average power consumption of CPU modules is 2.5W, and 2W for I/O modules.