User manual

APAX-5000 I/O Series User Manual 54
4.1 APAX-5002 2-slot Backplane Module
APAX-5002 is an interface between CPU module, coupler and I/O modules. Different
APAX-5002 can be stacked together. Power and data can be transferred to I/O modules
inserted on the APAX-5002. You can use external power supply or APAX-5343E power
supply module to give power to the backplanes and I/O modules. Refer to Section 1.7.1
and 1.7.2 for the operation procedure. If the APAX-5002 is powered-on, you can see the
LED to indicate the module is working. Refer to figure below for the location of the LED.
There is an expansion port on front side of APAX-5002. With this port, users can build a
remote expansion architecture, remaining fast local-bus data transmission speed. Stan-
dard Ethernet cables can be used to connect any two APAX-5002. However, shielded
industrial Ethernet cable MUST be used instead of standard Ethernet cable when the
system is used in harsh environment, such as factory automation. Unmanaged indus-
trial Ethernet switches (such as Advantech EKI-2528) with 100 Mbps transmission
speed can also be used between two APAX-5002. Therefore, you can flexibly build any
remote expansion with line, tree or star topology. All the APAX-5000 I/O modules can
benefit from the remote expansion architecture with local bus speed.
Warning! 1. DO NOT use managed switch, hub or router between backplanes for
expansion.
2. The network for the expansion should be a local network, NOT to con-
nect with other external network (such as public network in enterprise
network, including Internet).
3. Cat 6 Ethernet cable is strongly recommended for better data trans-
mission quality.
4. It is suggested to power on all the I/O modules together to avoid any
unpredictable situation.