MERRICK Genetix - Start Code; End Code; Communication Timeout

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Selecting this parameter from the Numeric Data menu will bring up the Numeric
Data Entry screen that will allow you to enter the desired Unit Address. This
should be done after selecting the correct protocol (see above).
Start Code
Some protocols use Start Codes and End Codes to identify the beginning and
end of a telegram. The Start Code parameter will only appear in the Numeric
Data list if “ScaleNet” has been selected as the protocol. The default value for
this is 10, and this should probably not be changed. Certain Merrick
applications (i.e. WinMerik®) expect this parameter to be set to 10.
Selecting this parameter from the Numeric Data menu will bring up the Numeric
Data Entry screen that will allow you to enter the desired Start Code. This
should be done after selecting the correct protocol (see above).
End Code
Some protocols use Start Codes and End Codes to identify the beginning and
end of a telegram. The End Code parameter will only appear in the Numeric
Data list if “ScaleNet” has been selected as the protocol. The default value for
this is 13, and this should probably not be changed. Certain Merrick
applications (i.e. WinMerik®) expect this parameter to be set to 13.
Selecting this parameter from the Numeric Data menu will bring up the Numeric
Data Entry screen that will allow you to enter the desired Start Code. This
should be done after selecting the correct protocol (see above).
Communication Timeout
This is the maximum amount of time that the GCM will wait for a valid incoming
telegram (message). If a valid telegram is not received within this time period, a
communications timeout error will occur, and an appropriate logical output will
be set (i.e. “Port x Timeout”). This value is set in seconds. A value of zero (0)
will effectively disable this parameter and a timeout error will never occur.
This parameter is valid and will appear in the Numeric Data menu only if one of
the following protocols is selected:
• UI Protocol
• ScaleNet
• DF1
• Modbus RTU
• Modbus ASCII
• Modbus TCP