serial link driver. Diagnostic counters and monitoring values are found via the LHMI
in Monitoring/Communication/COMn (n= 1,2,…).
Depending on the communication protocol, the serial driver software receives single
characters or complete protocol frames, based on the frame start/stop characters or
on timing.
Monitoring data for a COM channel can be divided into basic and detailed diagnostic
counters.
Table 20: Monitoring data for a COM channel
Parameter Range Type Description
Characters
received
0…2147483646 Basic Number of separate characters received.
Frames received 0…2147483646 Basic Number of successfully received complete
frames.
Frames discarded 0…2147483646 Basic Number of frames discarded.
Frames
transmitted
0…2147483646 Basic Number of frames transmitted.
CD Lost 0…2147483646 Detailed Number of carrier-detect signal lost during
receive.
Collision 0…2147483646 Detailed Number of collisions detected.
CTS Timeout 0…2147483646 Detailed Number of clear-to-send signal timeout
errors.
Transmission
timeout
0…2147483646 Detailed Number of transmission timeout errors.
Parity errors 0…2147483646 Detailed Number of character parity errors detected.
Overrun errors 0…2147483646 Detailed Number of character overrun errors
detected.
Framing errors 0…2147483646 Detailed Number of character overrun errors
detected.
Link status 1 1 = Reset counters (by entering 1 the
diagnostic counters are reset)
Whether all diagnostic counters are relevant depends on the communication hardware
and communication protocol.
Section 8 1MRS756708 A
Commissioning
100 615 series
Operation Manual
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