Parameter Range Type Description
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.
Table 26: Basic diagnostic counters
Counter Function
Characters received Counts all incoming non-erroneous characters.
This counter operates regardless of if the serial
driver is set to detect a whole protocol link frame or
just separate characters.
Frames received
Counts all protocol specific non-erroneous frames
received. Protocol-specific frames can be based
on timing (for example, Modbus RTU) or on
special start and stop characters (for example,
Modbus ASCII).
Frames discarded
Counts all protocol-specific erroneous frames
received. If the driver detects an error while
receiving a frame, the frame is automatically
discarded. This also means that the protocol in
question will never receive a faulty frame from the
driver. When this counter is increased, one of the
detailed error counters is also incremented.
Frames transmitted
Counts all protocol-specific frames transmitted
from the COM channel.
Table 27: Detailed error counters
Counter
Function
CD Lost In RS-232 handshake mode, characters are to be
received as long as Carrier Detect (CD) signal is
active. This counter is incremented if the CD signal
is lost during reception.
Collision
Counts transmission collisions. Used in RS-485
mode by some protocols where transmissions
could collide. For example, DNP3 unsolicited
mode.
CTS Timeout.
In RS-232 handshake mode the Clear To Send
(CTS) signal is not received as reply to this device
Request To Send (RTS) signal.
Table continues on next page
1MRS758754 B Section 8
Commissioning
REC615 and RER615 121
Operation Manual
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