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3 Telegram description
The telegram has a specific basic structure (without checksum):
Field
L-Field
C-Field
M-Field
M-Field
A-Field
A-Field
A-Field
A-Field
A-Field
A-Field
Ci-Field
AccNo
Status
Config.Word
Config.Word
AES Ver.
AES Ver.
DR1
DR1
DR1
DR1
DR2
DR2
DR2
DR2
DR2
User Manual RelAir ICS ·03/2019 · VERSION 1.0
Description
Length of telegram 46 Byte
Type of telegram: SND_NR
Manufacturer-ID:
REL = Relay GmbH
„REL" is identical with the part „Manufacturer ID" of
the serial number at the equipment indicator.
Serial number:
ID = e.g. 08154711
Identical with the part „Fabrication Number" of the
serial number at the equipment indicator.
Version: 2; Identical with the part „Fabrication Block"
of the serial number at the equipment indicator.
Type of device: Room sensor
Control field: „Response from Device"
Access number: e.g. 65. Is increased by 1 at each
transmission with updated data.
Status field: Normally 0. In case of „battery empty"
the „LowPower" and the „Permanent error" bit are
set.
Configuration field: NNNNCCHHb If encryption is
deactivated then 00h, otherwise the number of
encrypted blocks (e.g. 1 block = 10h).
Configuration field: BAS0MMMMb If encryption is
deactivated then 00h, otherwise encryption mode 5
(05h). If potential for synchronous release the S bit is
set additionally.
AES verification
AES verification
DIF: 0Ah = 4 Digit BCD coded
VIF: 66h = temperature * 10^(-1) °C
Value: e.g. 23,7°C
DIF: 0Ah = 4 Digit BCD coded
VIF: FBh = First extension table
VIFE: 1Ah = relative humidity * 10
Value: e.g. 37,8%
RelAir ICS
-1
%
Value
2Eh
44h
ACh
48h
11h
47h
15h
08h
02h
1Bh
7Ah
41h
00h
00h
00h
2Fh
2Fh
0Ah
66h
37h
02h
0Ah
FBh
1Ah
78h
03h
7
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