© 2012-2017 Yamar Electronics Ltd.

2

DS-SIG61 R1.05

2 OVERVIEW

The SIG61 is an independent slave in a Master-Slaves network operating on a selected narrow band

channel. A single SIG60 master controls all the slaves in a network; the slaves may be SIG61 devices

as well as SIG60 devices operating as slaves.

Proper Network operation is maintained by employing 5 types of command messages: Read, Read-

change, Write, Sleep and Change-Frequency. The command format is similar to the standard Universal

Asynchronous Receiver Transmitter (UART).

The SIG61 has internal narrow band modem, capable of operating in noisy environments. The receiver

listens to the Powerline on its preset frequency. It filters out the signal from noise and interference and

tries to recover the original command. If the checksum is correct, the SIG61 extracts the ID, Command

and the Data.

If the received ID matches its own ID, the SIG61 proceeds to detect the received command. When a

Write command is received, the data part of the command is directed to the corresponding 8 output

pins. When a Read command is detected, the SIG61 responds by transmitting a dedicated message

towards the master containing an image of its 8 input pins.

Multiple networks can operate concurrently on the same wire using different carrier frequencies.

2.1

Channels and Network

The SIG60-SIG61 network supports 16 combinations of frequency pairs. When set to such a pair, it is

easy to switch from one frequency to the other when such need arises. Each channel accommodates a

single SIG60 master and up to 15 SIG61/SIG60 slave devices. Additional SIG60-SIG61 networks can

coexist on the same power line by employing different frequencies for each network, thus allowing

different applications.

Channel frequencies:

1.75MHz, 4.5MHz, 5.5MHz, 6.0MHz, 6.5MHz, 10.5MHz and 13.0MHz.

Data transfer rate:

9.6Kbps up to 115.2Kbps.

Cable length:

Dependant on external AC loads connected to the AC/DC Powerline.

2.2

The SIG61 Device

Figure 2.1 outlines the building blocks of the SIG61 device.

Figure 2.1 - SIG61 Logical Blocks