YASKAWA MP3300 series Product Manual

Also see for MP3300 series: Instruction manual Setup manual

Contents

3.1 Basic Functionality3.1.4 Scans3-293 CPU Module Functionality3.1.4 ScansA scan refers to the processing that starts at fixed intervals.This section describes the scans.Types of ScansThe CPU Modules has two types of scans, the high-speed H scan and low-speed L scan.A high-speed H scan has higher priority than a low-speed L scan. The fixed period for eachscan, also known as the scan time, can be set by the user.This section describes the settings for the scan times.High-speed (H) ScanThe following table shows the different high-speed scan time set values depending on whetherthe MP2000 Optional Module is used. High-speed Scan Time Set Value RestrictionsThis section describes the restrictions on the set value of the high-speed scan time. Restrictions Imposed by the MECHATROLINK-III Communications CycleThe high-speed scan of the CPU Module is synchronized with the MECHATROLINK-III commu-nications cycle of the SVC or SVC32 Module in the CPU Module. This imposes the followingrestrictions in the set value of the high-speed scan time.There are restrictions on the set value of the high-speed scan time. Refer to the following sectionfor details. High-speed Scan Time Set Value Restrictions on page 3-29When the MP2000 Optional Module Is Not Used When the MP2000 Optional Module Is UsedCPU-301: 0.25 to 32.0 ms (in increments of 0.125 ms)CPU-302: 0.125 to 32.0 ms (in increments of 0.125 ms)0.250 ms or0.5 to 32.0 ms (in increments of 0.5 ms)The default high-speed scan time is 4.0 ms.Communica-tions CycleHigh-speed Scan Time SetValue RestrictionsPossible Set ValuesWhen MP2000 Optional ModuleIs Not UsedWhen MP2000 OptionalModule Is Used125 μs Integral multiple of 125 μsCPU-3010.25 to 32.0 ms(in increments of0.125 ms)0.25 ms or 0.5 to 32.0 ms(in increments of 0.5 ms)CPU-3020.125 to 32.0 ms(in increments of0.125 ms)0.125 ms, 0.25 ms, or 0.5 to32.0 ms(in increments of 0.5 ms)250 μs Integral multiple of 250 μs or1 times the integer portion0.250 to 32.0 ms(in increments of 0.250 ms)0.250 ms or 0.5 to 32.0 ms(in increments of 0.5 ms)500 μs Integral multiple of 500 μs or1 times the integer portion0.5 to 32.0 ms(in increments of 0.5 ms)0.5 to 32.0 ms(in increments of 0.5 ms)1 ms Integral multiple of 1 ms or 1times the integer portion1.0 to 32.0 ms(in increments of 1 ms)1.0 to 32.0 ms(in increments of 1 ms)1.5 ms Integral multiple of 1.5 ms or1 times the integer portion1.5 to 31.5 ms(in increments of 1.5 ms)1.5 to 31.5 ms(in increments of 1.5 ms)2 ms Integral multiple of 2 ms or 1times the integer portion2.0 to 32.0 ms(in increments of 2 ms)2.0 to 32.0 ms(in increments of 2 ms)3 ms Integral multiple of 3 ms or 1times the integer portion3.0 to 30.0 ms(in increments of 3 ms)3.0 to 30.0 ms(in increments of 3 ms)NoteInformation