6. Function blocks6.1 Manufacturer function blocks6.1.2.3 CH - High-speed counterGeneraleasyE4 base devices provide 4 high-speed countersCH01…CH 04.The high-speed up and down counters are internally hard-wired with the digital inputs I01...I04 and operate inde-pendently of the cycle time.Operating principleThe contacts will switch according to the actual value. The appropriate function blockoutputs switch according to the actual value determined. The counter relays enable apreset start value to be defined at the SV input.Only square wave signals are permissible.The mark-to-space ratio is 1:1.The counter wiring must observe the following digital input assignment:l I01 Counter input for the CH01 counter relayl I02 counter input for CH02 counter relayl I03 counter input for CH03 counter relayl I04 counter input for CH04 counter relayNOTICEAvoid unforeseeable switching states.Switch C, CF, CH, CI function blocks only at one single point in the pro-gram.Otherwise, previous counts will be overwritten.230 easyE4 11/18 MN050009 EN www.eaton.com
