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(6) Checking communication error and network event history
Communication errors and network events are detected using the CC-Link IE Field Network diagnostics as well
as link special relays (SBs) and link special registers (SWs). (
1.
The number of communication errors is stored in SW0074 to SW0077, and SW007C to SW007F.
The number can be cleared by Clear communication error count (SB0006).
2.
When network event history occurs, Event history status (SB007A) is turned on. Number of
network event history items is stored in Event history cumulative count (SW007A). The number
can be cleared by Event history count clear (SB0009).
When Event count clear (SB0009) is accepted, Event history clear acceptance status (SB0061) turns on.
When the event count is cleared, Event history clear completion status (SB0062) turns on.
Number
SB0006
Clear communication error count
SB0009
Event count clear
SB0061
Event history clear acceptance status
SB0062
Event history clear completion status
SB007A
Event history status
416
Description
Page 206, CHAPTER 9)
Number
SW0074
PORT1 cable disconnection detection count
SW0075
PORT1 receive error detection count
SW0076
PORT1 total no. of received data (lower 1 word)
SW0077
PORT1 total no. of received data (upper 1 word)
SW007A
Event count
SW007C
PORT2 cable disconnection detection count
SW007D
PORT2 receive error detection count
SW007E
PORT2 total no. of received data (lower 1 word)
SW007F
PORT2 total no. of received data (upper 1 word)
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