4. Configuration
80
Direct
Representation
Variable
Diagnostic Variable
T_DIAG_MODBUS_RTU_MASTER_1.*
Communication Statistics:
Counter of request transmitted by the
master (0 to 65535)
Counter of normal responses received
by the master (0 to 65535)
Counter of responses with exception
codes received by the master (0 to
65535)
Counter of illegal responses received
by master – invalid syntax, not enough
received bytes, invalid CRC – (0 to
65535)
Counter of overrun errors during
reception - UART FIFO or RX line – (0
to 65535)
Counter of answers with construction
errors, parity or failure during reception
(0 to 65535)
Counter of CTS time-out error, using
RTS/CTS handshake, during
transmission (0 to 65535)
Table 4-45. MODBUS RTU Master Diagnostics
Note:
Counters: All MODBUS RTU Master diagnostics counters return to zero when the limit value
65535 is exceeded.
Devices Configuration – Symbolic Mapping configuration
The slave devices configuration, shown on Figure 4-15, follows the parameters below:
Figure 4-15. Device General Parameters Settings