User Documentation

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7.1.2 Advanced Settings
7.1.2.1 Advanced Settings  Modbus
The menu item Modbus is where certain adjustments can be made to optimize the communication
between Modbus devices.
Modbus parameter settings
Initial Delay
Some Modbus slaves may take more time to boot up than other devices. For certain environments,
this may cause the entire system to suffer from repeated exceptions during the initial boot-up. You can
force the Modbus Gateway to wait after booting up before 

Modbus TCP Exceptions
The Modbus Gateway is a protocol converter that transparently passes requests and responses
between the Ethernet and serial interfaces. In some situations, it may be necessary for the Gateway to
return an exception to a request from a Modbus TCP master instead of a slave response. This can be
Modbus Gateway
can return two types of exceptions: