Documentation

EMbusResponseException Class Reference
[Error Management]

Modbus® exception response. More...

Inheritance diagram for EMbusResponseException:
EBusProtocolException EInOutError EMbusGatewayPathUnavailableException EMbusGatewayTargetFailureException EMbusIllegalAddressException EMbusIllegalFunctionException EMbusIllegalValueException EMbusSlaveFailureException

Detailed Description

Modbus® exception response.

Signals that a Modbus exception response was received. Exception responses are sent by a slave device instead of a normal response message if it received the query message correctly but cannot handle the query. This error usually occurs if a master queried an invalid or non-existing data address or if the master used a Modbus function which is not supported by the slave device.

See also:
EBusProtocolException
FieldTalk Modbus Master Library, Delphi Edition
Library version 2.6.2