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