PROFIBUS DP (COM465DP only)
33
COM465IP-COM465DP_D00216_02_M_XXEN/03.2017
5.2.1.2 Example 2: Querying measured value in the event of an IRDH375 alarm
The IRDH375 has the BMS address 3, channel 1 is queried.
An insulation fault with the measured value 5 kΩ has occurred (alarm).
Request to the gateway
For an explanation of the protocol structure see "Type 1: Querying measured data from devices on
the bus" on page 27.
Byte 0 Byte 1 Byte 2 Byte 3 Byte 4 Byte 5 Byte 6 Byte 7 Byte 8 Byte 9
Byte 10
ID
Msg
type
System Device Channel 0x00 0x00 0x00 0x00 0x00 0x00
0x02 0x01 0x02 0x03 0x01 0x00 0x00 0x00 0x00 0x00 0x00
Byte 0: Sequential ID no.
Byte 1: Message type: For this request always 0x01
Byte 2: Subsystem address: 2
Byte 3: BMS device address: 3
Byte 4: Channel: 1
Byte 5-10: Always 0x00
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