NOVUS AirGate-Modbus - Manual (Page 16)

AirGate-Modbus
NOVUS AUTOMATION 16/22
READ HOLDING REGISTERS – 0X03
This command can be used to read the value of one, or up to the maximum amount of consecutive holding registers, as
shown in the “Holding Registers Table.”
WRITE HOLDING REGISTERS – 0X06
This command can be used to write in a holding register, as shown in “Holding Registers Table.”
DESCRIPTION OF SOME REGISTERS
REGISTER 35 – OPERATION CHANNEL
Shows the operation channel that the equipment is operating on the network. It can vary from 11 to 25, where each
channel is equivalent to an operation frequency. Among these 15 possible channels, the network operates on the
channel that has the lowest interference.
CHANNEL OPERATION FREQUENCY
11 2405 MHz
12 2410 MHz
13 2415 MHz
14 2420 MHz
15 2425 MHz
16 2430 MHz
17 2435 MHz
18 2440 MHz
19 2445 MHz
20 2450 MHz
21 2455 MHz
22 2460 MHz
23 2465 MHz
24 2470 MHz
25 2475 MHz
Table 3 – Operation Channels
REGISTER 36 - LINK QUALITY INDICATOR RX FATHER
States the quality of the reception link of the connection between the equipment and the AirGate-Modbus father with
which it is paired. This value is obtained when measuring the power of the last packet received. This power is measured
in dBm, which is a logarithmic measurement of power in mW. The LQI can vary between -100dBm (worst reception
quality) to -15 dBm (best reception quality).
REGISTER 39 - LINK QUALITY INDICATOR RX CHILD
States the quality of the reception link of the connection between the AirGate-Modbus child whose Modbus address was
filled-out in the ADDR_FILHO register. This value is obtained when measuring the strength of the last packet received.
This power is measured in dBm, which is a logarithmic measurement of power in mW. The LQI can vary between -
100dBm (worst reception quality) to -15 dBm (best reception quality).