Counter Function7-127.4 Elapsed Value Hold Function7.4.1 Overview• The elapsed value hold function is a function which holds the elapsed value of the counter atthe time of the trigger input signal from an external device.• The elapsed value hold function is available only for CH0 and CH1. Each elapsed value istransferred to the hold value areas allocated to each channel.• It will be valid by turning on the signal (CHx LATCH EN) with a user program.• The input logics (ON -> OFF edge, and OFF -> ON edge) which enable trigger input signalscan be switched by the signal (CHx TRG LOG). I/O allocationName CH0 CH1 DescriptionCHx IN-A X100 X104They occupy the counter areas for external inputs (4 points for eachchannel).CHx IN-B X101 X105CHx RST X102 X106CHx MASK X103 X107CHx TRG X108 X10C Trigger input signal by an external input.CHx LATCH EN Y114 Y116 Enables the elapsed value hold function.CHx TRG LOG Y115 Y117Switches the valid condition of trigger input signals.When this is on, the ON -> OFF edge of the trigger signals (X8, XC) isvalid.When this is off, the OFF -> ON edge of the trigger signals (X8, XC) isvalid.(Note 1): The above I/O numbers are those for the slot number 1 and the starting word number 10. The I/O numbersactually used vary according to the slot number where the unit is installed and the starting word number. Unit memory (UM) allocationName CH0 CH1Counter elapsedvalue area UM00110-UM00111 UM00112-UM00113Counter hold valuearea UM00114-UM00115 UM00116-UM00117 ConfigurationWhen allocating "High-speed counter" to the inputs (X100-X107) on the Multi I/O Unit Settingdialog box, check the box of "Elapsed value hold mode".
