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2. Apply the Master's Explicit Request Messages to set the Identify object.
Device Heartbeat interval Attribute ID : 0x0A
Master (MAC ID =0x0A)
_ Group 2 Message
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_ Destination MAC ID=0x09
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_ Message ID =4
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ID=10 001001 100. Data= 0A 10 01 01
Slave response Device Heartbeat Message every two seconds.
_ Group 2 Message
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_ Source MAC ID=0x09
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_ Message ID =3
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ID=10 001001 011. Data=0A CD 01 00 03 00 00 00
If users want to cancel the heartbeat message, they must set the heartbeat
interval attribute value of the Identity object instance to zero.
I-7242D DeviceNet/Modbus RTU Gateway User's Manual, July 2006, Version 1.1
_ Frag=0. Transaction ID=0. Source MAC ID= 0x0A
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_ Service=set attribute
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| _ Class ID=1
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| | _ Instance ID=1
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Attribute ID= 0x0A
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Attribute Data= 2 seconds
0A 02 00
_ Frag=0. Destination MAC ID= 0x09
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_ Service code=0x4D
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_ Identity Object Instance ID=1
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_ Device State=3
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| __|_ _|__ ____ EV, SF, UF, DF and Consistency value
I-7242D user manual
Slave (MAC ID =0x09)
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