steute RF Rx SW868-USB Originalbetriebsanleitung Seite 13

RF Rx SW868/SW915/SW917/SW922-USB
Telegrammaufbau / Funkempfänger
Telegram structure / Wireless receiver
English
Data output
If a valid telegram is received in the operation modes (Sniffer, Gateway etc.) the following data are output:
Byte 1 2
Meaning PREAMBLE LEN MODE ADR DATA1 RSSI DATA2 BAT SENSOR CHECKSUM
The data bytes 1 and 2 distinguishes dependent if the switch is supplied by a battery or is self-sufficient.
Structure of the data bytes of a self-sufficient switch:
Data byte 1:
Bit 7 6
Meaning RPT DIR
3 4 5 6 7 8 9 10
5 4 3 2
SWITCH ERR EXT2
EXT1
11 12
PREAMBLE
LEN
MODE
ADR
DATA1
RSSI
DATA2
BAT
SENSOR
CHECKSUM
1 0
RPT
STATE
DIR
SWITCH
ERR
EXT1
EXT2
STATE
13 / 16
Meaning
0x03
0x0A
set operating mode
address of switchgear
1st data byte of the switching device
field strength of the received signal
2nd data byte of the switching device
Switchgear battery voltage
(1500 - 4000 mV in 10 mV steps)
Voltage value of a sensor
connected to the switching device
check sum for verification of data (Mo-
dulo 256) Byte 1 - 11
Meaning
set for repeated transmission of a tele-
gram
shows the direction of the telegram (1 ->
receiver -> sender)
01 -> switch is actuated
10 -> switch is no longer actuated
1 -> The last transmission was not confir-
med correctly.
The signal was forwarded by a repeater
(1st level).
The signal was forwarded by a repeater
(2nd level).
set for an acknowledgement telegram
(receiver -> sender)