Project Introduction A new residential community was developed in Taipei, Taiwan by a wellknown construction company. In this community, intelligent buildings were connected with fiber Ethernet. Residents would have access to high-tech services, such as highspeed Internet connections, advanced security systems, intelligent elevator control, and on-demand TV. In addition, each building would be monitored in real-time from a central control room, and individual fire alarms could be triggered as needed.
System Requirements
Every fire alarm needed to be connected to the control room staffed by security
guards. However, there was insufficient space in the existing pipes to install I/O wiring
from the alarms to the control room. Another solution was required to transmit
the I/O signals. Since fiber Ethernet was already installed, the client wanted a solution
that satisfied the following requirements:
•
Transmits I/O signals over Ethernet, from each building to the control room
•
No extra controller needed
•
Minimal training and wiring effort
Moxa Solution Moxa offers a variety of I/O solutions for most industrial requirements. The EDS-405A switch was used for the network infrastructure, and the ioMirror E3210 peer-to-peer Ethernet I/O servers were used to transmit I/O signals. Fire alarm sensors were connected to one ioMirror unit, which exchanged signals over Ethernet with another ioMirror unit that was connected to the control center. By utilizing the existing fiber network, I/O signals could be transferred without additional wiring effort. An advantage with the ioMirror E3210 is that channel-to-channel mapping is also supported, so one unit could receive I/O signals from different channels
over Ethernet.
Plug-n-Play Turbo Ring with fast recovery time of under
20 ms
•
Support QoS, port-based VLAN, SNMPv1/v2c/v3,
RMON
•
Port mirroring for online debugging
•
Automatic warning by exception through e-mail and
relay output
No programming required, reducing labor costs
Easy settings through web interface or LCD module
Reliable peer-to-peer function with alarm system
Complete selection and high quality service
Using an available Ethernet infrastructure to transmit I/O signals is an ideal solution for this kind of fire alarm system. Physical obstacles will either raise the cost of wiring or delay your project. With Moxa's ioMirror E3210 peer-to-peer Ethernet I/O server, the customer has an easy solution to transmit I/O signals through wired or wireless IP networks.
