9 |
Fault Byte 3
byte 2
7 6
5 4 3 2 1 0
Fault record number (always 0)
Number of fault records
Fault Bytes 4 and 5
Fault bytes 4 and 5 (bytes 3 and 4 of the datagram) identify the reference offset (within the Remote I/O Scanner itself) assigned to the faulted module. This is an internal reference, not a Series 90±70 reference.
byte 3
7 6 5 4 3 2 1 0
Diagnostic reference address, LSB
byte 4
7 6 5 4 3 2 1 0
Diagnostic reference address, MSB
Fault Bytes 6 and 7
Fault bytes 6 and 7 (datagram bytes 5 and 6) are interpreted by the Series 90±70 Bus Controller automatically. They are not relevant to other types of host.
byte 5
7 6 5 4 3 2 1 0
byte 6
7 6 5 4 3 2 1 0
Number of Series 90±70 fault entries to set (bit 7 = 1) OR: Fault byte mask for S90±70 Bus Controller dual port (bit 7 = 0).
Fault entire I/O module
Entity offset into diagnostic table
Fault entire Remote I/O Scanner
Chapter 9 Remote I/O Scanner Datagrams | 127 |