Functional Software descriptionDCS 500 Software Description 87• Data Logger DCS500B also includes a datalogger for measurements. Data log-ger has six logging channels. The capacity of each channel is 1000samples.DATA LOGGER func-tion blockData logger consists of six logging channelsDLOG1.[IN] (601)DLOG2.[IN] (602)DLOG3.[IN] (603)DLOG4.[IN] (604)DLOG5.[IN] (605)DLOG6.[IN] (606)The capacity of each channel is 1000 samples. These channels canbe used to collect fast incidents from the DCS500B within a certaintime. The total collection time (1...1000s) can be set with a samplinginterval parameter DLOG.SAMPL INT (610) (1...1000ms). Thiscollection time is common for all the channels.Channels can be examined in graph/numeric form with theCMT/DCS500 Tool.Selection of the parameter/signal index to be sampled in the datalogger channels 1...6 is made by setting the index to the desiredconnection point DLOG1.[IN] (601) ... DLOG6.[IN] (606).Selection of the trigger condition is made by means of the parame-ter DLOG.TRIGG COND (607) as follows:0 = external triggering1 = fault + external triggering2 = triggers when the difference between two successive values ofdata logger channel 1 is larger than the value defined inDLOG TRIGG VALUE (608)3 = triggers when the value in data logger channel 1 exceeds thevalue which is defined in DLOG TRIGG VALUE (608)4= triggers when the value in data logger channel 1 falls below thevalue which is defined in DLOG TRIGG VALUE (608).Note! Function blocks can be used to generate more complex trig-gering conditions.Number of samples after triggering can be defined by means ofparameter DLOG.TRIGG DELAY (609), 0 ... 1000.
