UMC2330BR11.pdf 31 -© Omniflex4.7.4 Periodic TimersTo set a Periodic Timer as a Trigger Source, select the desired ‘Message Trigger Source’(Periodic Timer 1 to 4) and set the period of the corresponding timer under “Configuration”->”Message Settings”->”Timer Settings”. This period is set in minutes and the maximum periodcan be set to 6553 minutes. The current status of these timers can be viewed under“RealtimeData”->”I/O Status”->”Timers”.4.8 On Demand MessagesIn order to be able to send the RTU “On Demand” Messages as described in section 3.11, the OnDemand ‘Password’ needs to be set, as well as the ‘Timezone’ and ‘Allowable time window’.The default factory password is OMFX, but this should be changed immediately. This passwordneeds to match the password in the On-Demand message sent to the RTU. On-Demand messagessent to this unit must contain this password for the messages to be accepted. This password is NOTcase sensitive.(i.e. ABC = abc). Up to 12 characters can be used.The Allowable Time Window is used to set the maximum difference in time allowable between thetime that the SMS was sent to the RTU and the current Silent Sentry clock time, for the command to