1766-RM001A-EN-P MicroLogix 1400 Programmable Controllers ...

Recipe and Data Logging 519Example Queue 0This queue is used to show how to calculate the string length of eachrecord and maximum number of records.Queue 0 (Date = ✔, Time = ✔, Delimiter = ,)Date Time N7:11 L14:0 T4:5.ACC I1:3.0 B3:2Record 0 01/10/2000 , 20:00:00 , 2315 , 103457 , 200 , 8190 , 4465Record 1 01/10/2000 , 20:30:00 , 2400 , 103456 , 250 , 8210 , 4375Record 2 01/10/2000 , 21:00:00 , 2275 , 103455 , 225 , 8150 , 4335Record 3 01/10/2000 , 21:30:00 , 2380 , 103455 , 223 , 8195 , 4360Record 4 01/10/2000 , 22:00:00 , 2293 , 103456 , 218 , 8390 , 4375Record 5 01/10/2000 , 22:30:00 , 2301 , 103455 , 231 , 8400 , 4405Record 6 01/10/2000 , 23:00:00 , 2308 , 103456 , 215 , 8100 , 4395Record 7 01/10/2000 , 23:30:00 , 2350 , 103457 , 208 , 8120 , 4415Record 8 01/11/2000 , 00:00:00 , 2295 , 103457 , 209 , 8145 , 4505Record 9 01/11/2000 , 00:30:00 , 2395 , 103456 , 211 , 8190 , 4305Record 10 01/11/2000 , 01:00:00 , 2310 , 103455 , 224 , 8195 , 4455Record 11 01/11/2000 , 01:30:00 , 2295 , 103456 , 233 , 8190 , 4495String Length of RecordThe size of a record is limited so that the length of the maximumformatted string does not exceed 109 characters. The following table canbe used to determine the formatted string length.Data Memory Consumed Formatted String Sizedelimiter 0 bytes 1 characterword 2 bytes 6 characterslong word 4 bytes 11 charactersdate 2 bytes 10 characterstime 2 bytes 8 charactersstring 84 bytes 89 charactersfloat 4 bytes 13 charactersFor queue 0, the formatted string length is 59 characters, as shown below:Data Date Time N7:11 L14:0 T4:5.ACC I1:3.0 I1:2.1Characters 10 1 8 1 6 1 11 1 6 1 6 1 6= 10 + 1 + 8 + 1 + 6 + 1 + 11 + 1 + 6 + 1 + 6 + 1 + 6= 59 charactersPublication 1766-RM001A-EN-P - October 2008