Diagnostics
Document No. D113-015
Page 56 of 77
Revision 1.9
Rx Packet Count
The number of Modbus packets received by the module.
Checksum errors
The number of corrupted Modbus packets received by the module.
Parity errors
The number of bytes with parity errors received by the module.
Timeout Errors
The number of message response timeouts the module has encountered.
Data Too Large
The number of Modbus requests or responses where the data was too
large to process.
Register Not Valid
A request was received for a register which is not defined.
Node Mismatch
The received Modbus request did not match the module’s Modbus node
address.
Data Alignment Errors
The Modbus request and associated mapped item is not byte aligned with
the destination.
Illegal Function
The number of times the Modbus device responded with an Illegal
Function exception.
Illegal Data Address
The number of times the Modbus device responded with an Illegal Data
Address exception.
Illegal Data Value
The number of times the Modbus device responded with an Illegal Data
Value exception.
Slave Device Failure
The number of times the Modbus device responded with a Device Failure
exception.
Acknowledge –Response Delay
The number of times the Modbus device responded with an Acknowledge
exception.
Slave Device Busy
The number of times the Modbus device responded with a Slave Busy
exception.
Negative Acknowledge
The number of times the Modbus device responded with a Negative
Acknowledge exception.
Memory Parity Error
The number of times the Modbus device responded with a Memory Parity
exception.
Table 5.6 – Modbus statistics
5.3.
CHANNEL STATUS
The status of a specific channel can be monitored by double-clicking on the
Channel x Status
in the tree, or by right-clicking on the device and selecting the
Channel x Status
item.
