Frame Of Information On The Network Configuration; Keep Alive Frame - ADEUNIS WMBUS MODBUS MASTER Guide Utilisateur

WMBUS MODBUS MASTER - Guide utilisateur / User guide version V1.0.0
In the example in grey this gives:
• Byte 2 : register 300, Keep Alive frame period = 72x10 = 720min ie 12h.
• Bytes 3 and 4 : register 301, periodicity of transmission (periodic mode) = 180x20=3600s ie 1h
• Byte 5 : register 306, product mode is PRODUCTION
• Bytes 6 and 7 : register 320, data acquisition period for alarm = 180x20=3600s ie 1h
• Byte 8 : register 321=0x44, Modbus link configuration is:
• Bit 0 = 0 : RS485
• Bit 1 = 0 : 1 stop bit
• Bits 2 and 3 = 01 : the parity is even
• Bits 4 to 7 = 0100 : the baudrate is of 19200
• Byte 9 : register 322= 0xC8, configuration of supply time of the external load (slave) before the Modbus request is of 200x100=20
000 ms ie 20 secondes

4.2.3 Frame of information on the network configuration

Following reception of a downlink frame with the code 0x02 or on switching to the operating mode (from the Park or Command Mode), the
next frame (0x20) representing the network confguration of the product is transmitted:
0 1
Code Status
0x20 Cf Status S200
0x20 0xB2 0x18
Its size is of 4 bytes.
Description of the frame:
Byte 2 : register S200 : WMBUS channel
Byte 3 : register S201 : Frame format
In the example in grey this gives:
Byte 2 =0x18 : WMBUS channel is 24
Byte 3=0x00 : the format of the frame is B-format

4.2.4 Keep Alive frame

This frame (0x30) is transmitted only in the event mode at the frequency defined by register 300.
0 1
Code Status
0x30 Cf Status
0x30 0xB2
Its size is of 2 bytes.
It contains only the code byte (0x30) and the status byte.
2 3
PAYLOAD
S201
0x01
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