Bus Telegrams - Relay PadPuls M1 User Manual

4 M-Bus Telegrams
1) General
• Communications according to EN1434-3
• Transmission rates 300, 2400 and 9600 Bd with auto-baud detect
• Primary and secondary addressing with wild cards
• SND_NKE / E5, SND_UD / E5, REQ_UD2 / RSP_UD is supported
2) Definitions
• All values are specified in hexadecimal
• Empty fields in the "Contents" line are variable
• Index 1 designates the least-significant byte in fields containing several bytes
3) RSP_UD Telegram
Byte 1 2
Name Start Length
Inhalt 68 1B
Byte 14 15
Name GEN MED
Inhalt
Byte 27 28
Name Count6 Spez.
Variable 00 0F
Notes:
• Manufacturer MAN = "REL" (48AC)
• Generation GEN ( at this time $08, reserved range from $01 to $0F)
• Status bit 7 (MSB):
• VIF: Set by the user; VIF = unit with decimal power (MSB not set)
• Count: Meter reading (most-significant byte = Count6 always zero)
• Numerator / Denominator: Impulse value (increment in multiples of the VIF per
impulse):
1 Pulse =
12 26.09.01, Version 1.3
GmbH, Stettiner Str. 38, D-33106 Paderborn
3 4 5
Length Start C
1B 68 08
16 17 18
TC Status SIG1
00 / 80 00
29 30 31
Index
Numerator Denominator
01
1 →
write protection set
0 →
write protection removed
Numerator
Denominator
6 7 8 9
A CI ID1 ID2
72
19 20 21 22
SIG2 DIF VIF Count1 Count2 Count3 Count4 Count5
00 06
32 33
CS Stop
16
• VIF
10 11 12
ID3 ID4 MAN1 MAN2
AC
23 24 25
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