Serial communication diagnostics and monitoring is divided between the serial link driver and the serial communication protocol. The lower level physical and protocol-independent aspects of the UART-based serial communication are monitored in the serial link driver. Diagnostic counters and monitoring values are found via the LHMI in .
|
Parameter |
Description |
|---|---|
|
Serial mode |
Used for galvanic RS-485 mode, 2-wire |
|
Baudrate |
Communication speed used |
|
Parameter or counter |
Description |
|---|---|
|
LNKxLIV |
TRUE whenever characters are received on the serial interface |
|
CHxLIV |
TRUE while complete link frames are received |
|
Characters received |
Counts all incoming non-erroneous characters. This counter operates regardless of whether the serial driver is set to detect a whole protocol link frame or just separate characters. |
|
Parity errors |
Counts the number of parity errors detected in characters received |
|
Overrun errors |
Counts the number of overrun errors detected in characters received |
|
Framing errors |
Counts the number of framing errors detected in characters received |
|
Reset counter |
Resets all counters to zero |