Communication
2.2 Modbus
84 SICAM Q100, 7KG95xx, System Manual
E50417-C1040-C522-A8, Edition 09.2020
For other user port numbers: 3 connection attempts via stan-
dard port 502 and/or 3 connection attempts via user port
• Access rights: Default setting: Full
• Communication supervision time: Default setting: 60 000 ms
Parameter of Connections
• Server port: Server port number of the current connection in the respective
column; if 0 is displayed, the connection is inactive or down
• Client IP:Port: Last or current IP address and port number of the client
• Received bytes: Total number of bytes received by the TCP port
• Sent bytes: Total number of bytes sent to the TCP port
• Good messages: Total number of messages received that were detected as valid
Modbus messages
• MBAP header errors: Error in the MBAP header: incorrect protocol ID or implausible
length of data
• Exception responses: Counters of the transmitted exception response messages
• Access rights violations: Total number of write accesses received if the parameter Access
rights for port xxx is set to Read only of the associated TCP
port (for example 502) in the Communication Ethernet input/
output window. For more information, see the device manual,
chapter 8 - Ethernet Communication)
2.2.8.2 Modbus RTU Slave Diagnosis
Figure 2-7 Modbus RTU Slave Diagnosis
Parameter
The following parameters are displayed with Modbus RTU Slave:
• Device address: Default setting: 1
• Baud rate: Default setting: 19 200 bit/s
• Parity: Default setting: Even
• Access rights: Default setting: Full
• Communication supervision time: Default setting: 60 000 ms
SYS_SICAM_Q100_US.book Page 84 Thursday, September 24, 2020 1:17 PM
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