FAQ » IoT PLC Communication Module

It is an abbreviation for Power Line Communication.

There are mainly low-speed PLCs that use 450KHz or less and high-speed PLCs that use 2MHz～30MHz. We handle high-speed PLCs.

The advantages (characteristics) are mainly following four points.

・Long Distance: The multi-hop function can transmit up to about 2Km.

・Available for any wires: In addition to power lines, it can also be used for coaxial, leased lines, telephone lines, etc.

・High Speed: The physical speed is 250 Mbps and the effective speed is about 150 Mbps.

・Security: In addition to AES encryption, because it estimates the state of the transmission line and communicates
　with it, the eavesdropping is not possible.

The disadvantage is that the communication performance varies depending on the power distribution board, noise equipment, wiring topology, wire rods, etc.

Wireless LANs and PLCs cannot be compared easily because their use locations and intended uses are different. However, when compared concisely, PLCs can be connected even if they are not connected by wireless LANs.

It depends on the quantity of modules and the applications to be used.
Please tell us about your, 1. application, 2. mass production timing, 3, quantity / month, number of lots per year and mass production period.

It is about four months from the time the order is received.
However, there is a possibility that it will be further delayed depending on the procurement situation of parts,
so please check with our sales representative.

Communication is possible on various lines (VVF, leased line, coaxial, telephone line, etc.). However, for use on power lines in Japan, it must comply with Article 100 of the Radio Law (for indoor use only, with the preconditions for outdoor use).

In multi-hop mode, communication may not be possible when the communication line exceeds 2km.
Under power line environments, communication may not be possible if there is a noise device nearby such as a charger or dryer. In this case, it is necessary to attach a noise filter, etc.

The communication speed varies depending on the characteristic impedance, topology, the inside and outside of the switchboard breaker of the communication line.

IoT PLC method implements a variety of noise-tolerant functions and one of them is the LDPC-CC code
and Reed-Solomon code.
Also, if communication cannot be performed due to the influence of noise, installation of a noise filter on the equipment generating noise may improve the problem.

The effective velocity is approximately 150Mbps at the physical rate of the PLCs.

The module is not waterproof. Please take waterproof measures using the customer's enclosure.

It is difficult to answer because it depends on customer's system.
However, we are preparing a tool that enable maintenance and software updates.
If something happens, it is possible to update.

There is a possibility of damage.
If the product is used outdoors, please take measures at customer side against lightning surges, etc.

In case of our fault, we will replace it.

Depending on the customer's system and communication lines, peripheral parts are required.
Please refer to the module specification.

We are preparing an adapter for evaluation.

※ Answers are based on calculated values, demonstration results and achieved values used in Japan.

※ When using it outside Japan, it is necessary to apply the law of the country of use and obtain approval /
　 certification if necessary.