Frequently Asked Questions
 
   
 
Q: The communication cable between controller end and actuator end is not durable so we need to frequently replace it. Can wireless technology help?
A: Yes. Industrial wireless technology can enable cable-free communication for crane applications so the associated costs, such as installation and maintenance, can be significantly reduced.
 
Q: How can we deploy wireless connections on a moving crane?
A: Wireless technology is the best solution for any moving vehicle. Unlike data cable limitations, the connection remains intact even if the distance or position varies.
 
Q: We’ve adopted a specially-made radio transceiver for wireless communication. How is your solution different?
A: Moxa’s solution is based on the sophisticated IEEE 802.11 standards that deliver many benefits:
   
a) More cost-effiective
b) IEEE 802.11 standards use license-free bands; you do not need to apply for additional radio licenses
c) Provides a higher data rate of up to 54 Mbps for high bandwidth-demanding applications.
d) The technology is more stable and future-proof because it is based on open standards, instead of proprietary specifications.
e) It can be easily integrated into Ethernet or other TCP/IP networks.
 
Q: It is very critical to install cables to the field. Is there an easer way to distribute APs and save on cabling costs?
A:

Moxa’s dual-RF solution provides two types of advanced wireless network architectures:

a) Wireless bridge network: Dual RFs can create two-way cascade links to form a bridge by running the same device in both master and slave modes. This optimizes the cost-effectiveness and reliability of each wireless unit while maintaining a throughput rate of up to 25 Mbps.
b) Mesh Network: Mesh technology provides hot-spot-style service; one RF is used to automatically join a self-configuration trunking network and the other is used to serve local clients simultaneously.
 
Q: We are told that a proprietary radio solution has FH (Frequency-hopping) technology to avoid interference. Does Moxa have an interference-proof solution?
A:

Unlike the conventional FH, advanced SS (Spread Spectrum) technologies, including FHSS and DSSS, are also configured in IEEE 802.11 standards to increase the reliability of wireless communications. Moxa’s WLAN solution adopts more advanced technologies to effectively prevent interferences:

a) Redundant wireless connections
b) In addition to standard 2.4-2.5 GHz, 5.15-5.35 GHz, and 5.47-5.825 GHz bands, Moxa provides tailor-made RF band service for special band utilization that can effectively prevent interference problems. Moxa’s tailor-made RF band service includes:
• 2.272 GHz to 2.4 GHz frequencies (Europe ETSI)
• 4.9 GHz to 5.1 GHz frequencies (public safety band)
• 5.825 GHz to 6 GHz frequencies (special application band)
 
 
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