Siemens SICAM Q100 System Manual page 89

The counters are cleared automatically when the device starts up and each time the request message list is
regenerated after a change of the mapping parameterization.
Figure 2-9
Parameter
• Baud rate:
• Parity:
• Additional inter-character timeout: Default setting: 1 ms
Counter
• Received bytes:
• Sent bytes:
• Good messages:
• Bad messages:
• Parity errors:
• Framing errors:
Request Telegrams
• Status:
SICAM Q100, 7KG95xx, System Manual
E50417-C1040-C522-A8, Edition 09.2020
Diagnosis Modbus RTU Master
Default setting: 19 200 bit/s
Default setting: Even
Total number of bytes received from the RS485 interface since the last device
restart or the last clearing of the counter.
Total number of bytes sent to the RS485 interface since the last device restart
or the last clearing of the counter.
Number of valid response messages of Modbus slave devices (syntax of the
message is valid and the message was received within the response time-out).
Total number of:

no responses (response time-out after sending a request)

error feedback indications

errors in message formats received
Number of detected parity errors (wrong parity).
Number of detected framing errors (invalid stop bit, for example, if the baud rate
is wrong).
Status of the request messages

Good: correct response

Not requested: the request was not sent yet after changing the configuration

No response: the Modbus slave device does not respond (for example,
communication failure)

Exception responses (n): exception respons essent with error code
Communication
2.3 Modbus RTU Master
89