What command can I use inorder to generate Emergency, Alert, Critical, Error, Warning messages. Any suggestions ???

I was able to send syslog  messages from the Cisco 877 and the Dell PowerConnect 3524 to a Kiwi Syslog Daemon 8.3.2 . I executed several commands in the router and switch, so the syslog sever could receive syslog messages .The sylog server  groups  the messages as :Emergency, Alert, Critical, Error, Warning, Informational, Notice and  Debug .I was able to generate  notice and informational messages. With a reload of the router,When commands are executed in the Global Configuration mode and  When saving the configuration file the switch give a informational and notice message

What command can I use inorder to generate  Emergency, Alert, Critical, Error, Warning messages. Any suggestions ???