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Series 90–70 Remote I/O Scanner User’s Manual – June 1992124
Datagram Types
The table below shows the types of device that can send each datagram, and the
resulting action taken by the Remote I/O Scanner.
Datagram Type Subfunction
Code
Sent
From
Remote I/O Scanner
Action
Read Identification 00 BC, HHM send Read ID Reply
Read Configuration 02 BC, HHM send Read Configuration Reply
Write Configuration 04 BC, HHM process (possibly send configura-
tion changes)
Assign Monitor 05 BC process
Begin Packet Sequence 06 BC, HHM start sequence
End Packet Sequence 07 BC, HHM end/check sequence
Read Diagnostics 08 BC, HHM send Read Diagnostics Reply
Read Block I/O 0C BC, HHM send Read Block I/O Reply
Pulse Test 10 HHM send Pulse Test Complete
Clear All Faults 13 BC, HHM process
Switch BSM 1C BC. HHM process
Read Device 1E BC, HHM send Read Device Reply
Write Device 20 BC HHM process
Read Point Diagnostics 25 BC, HHM send Read Point Diagnostics
Reply
Read Map 2A BC, HHM send Read Map Reply
Write Map 2C BC, HHM process–autoconfigure
A PLC or computer can send a datagram to the Remote I/O Scanner in the same
manner as sending a datagram to an I/O block or Bus Controller.