Elvaco CMeX50 - Page 52

CMeX50 Users Manual English
CMeX50 Users Manual English
page | 52 (89)
2017-10-13
Document id: 1090055 Version 1.5
2
0xnn
L-field 2 = L-field 1
3
0x68
Start 2
4
0x08
C-field = RSP-UD
5
0xnn
A-field = CMeX50 primary address
6
0x72
CI-field = 12-byte header follows
7-10
0xnn 0xnn 0xnn 0xnn
ID-field = CMeX50 secondary address, packed BCD
11-12
0x96 0x15
MFR-field = 0x1596 = ”ELV”
13
0xnn
VER-field, 0x01..0x09
14
0x31
DEV-field = 0x31 = ”OMS MUC”
15
0xnn
ACC-field, continuous counter 0.00..0xFF, 0x00..
16
0x00
STATUS-field, always 0x00 in this telegram
17-18
0x00 0x00
SIGNATURE-field, always 0x0000 in this telegram
19-24
0x0C 0x78 0xnn 0xnn 0xnn
0xnn
CMeX50 serial number, 8 digits packed BCD
25-33
0x0D 0xFD 0x0F 0x05
0xnn 0xnn 0xnn 0xnn 0xnn
CMeX50 program version, 5 digits ASCII-text.
Example: 0x35 0x2E 0x36 0x2E 0x31 in transmit
order ”1.6.5” which means
MajorVersion=1, MinorVersion=6, PatchLevel=5
34-56
0x0D 0x7C 0x03 0x79 0x65
0x6B
0x10 0xnn 0xnn 0xnn 0xnn
0xnn
0xnn 0xnn 0xnn 0xnn 0xnn
0xnn
0xnn 0xnn 0xnn 0xnn 0xnn
Global AES128 key for decryption of telegram
(0x79 0x65 0x6B = 'key' backwards)
57-63
0x01 0x7C 0x03 0x6F 0x6D
0x77
0xnn
0xnn = wireless M-Bus mode:
0x00 = S1
0x02 = T1
0x04 = T1 + C1a + C1b
0x06 = C1a
0x07 = C1b
0x08 = C1a + C1b
0x09 = T1 + C1a
0x0A = T1 +C1b
0x0B = C1a WIDE
0x0C = C1b WIDE
0x0D = C1a + C1b WIDE
(0x6F 0x6D 0x77 = 'wmo' backwards, wireless
mode)
64-70
0x01 0x7C 0x03 0x65 0x73
0x77
0x00
This data field is no longer used, but is still
transmitted due to compatibility reasons
(0x65 0x73 0x77 = 'wse' backwards, wireless
sensitivity)
71-78
0x02 0x7C 0x03 0x74 0x69
0x77 0xnn 0xnn
Installation time, 0xnnnn minutes.
Allowed area 0..9999 minutes.
(0x74 0x69 0x77 = 'wit' backwards, wireless
installation time)