8 Communication
8.2 Modbus
156
SICAM I/O Unit, 7XV5673, Device Manual
E50417-H1040-C484-A3, Edition 05.2012
Serial Server
•
Good messages:
Total number of messages received that were detected as
valid Modbus messages
•
CRC errors:
Total number of messages received in which CRC errors
were detected
•
Exception responses:
Counters of the transmitted exception response messages
(see chapter 8.2.2)
•
Broadcast messages:
Total number of the broadcast messages received with the
server address 0
•
Access rights violations:
Total number of write accesses received if the parameter
Access rights
is set to
Read only
in the
Communication
serial
input/output window (see chapter 6.3.3.8)
MAN_SICAM_IO-Unit_7XV5673_US.book Page 156 Thursday, May 10, 2012 10:59 AM