© Stäubli 2009 – D28070504A CS8C102 / 248
Configuration
The configuration procedure for the Modbus Tcp Inputs/Outputs using the SRS Modbus IO Config tool is as
follows:
• Create a new configuration ("New") or load an existing configuration ("Load")
• In the "Items configuration", "Add Item" tab
• Define the name, type, size and access for each item
• Save the configuration ("General parameters", "Save" tab)
• Copy the file on the CS8C under /usr/applicom/modbus/modbus.xml
• Restart the CS8C
• Check the modbus Inputs/Outputs (Control panel > I/O > Modbus)
Diagnosis
Modbus Tcp errors are shown by messages on the MCP, which can also be displayed using the "events logger
" application. These errors begin with the word "MODBUS" followed by a CS8C diagnosis, identification of the
channel concerned, and the Status (applicom diagnosis).
The CS8C diagnoses are:
The diagnoses given by the Status are the same as those given for the Modbus field bus (see chapter 5.6).
InitLib #Status /usr/applicom/modbus/modbus.xml file missing
BuildItem #name The #name item has not been created (incorrect name, already used, or insufficient
memory).
Write #Channel #Status Writing error
Read #Channel #Status Reading error
StartServer It has not been possible to start the Modbus server. The modbus.xml file must be
invalid.
StopServer It has not been possible to stop the Modbus server
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