ProSoft Technology AN-X-AMX - Manual (Page 6)

AN-X-DCSLOG Module Overview
The AN-X-DCSLOG data logging module captures frames on an AutoMax DCS
network, extracts data changes, and logs the data that has changed from the previous
scan, along with timestamps to millisecond precision, to comma separated variable
(CSV) files, for import into trending and database software.
The module passively captures all network frames. It does not occupy a drop on the
network or affect existing network traffic in any way. It discards any frames with bad
status.
This approach means that the data is time stamped at the same time as it is sent on
DCSNet, not at some later sampled time, and that there is no added overhead on DCSNet
or on the AutoMax to obtain the data.
You select which data (by drop, register and optionally bit) you want to log, in a comma
separated variable file.
The Windows logger utility, AnxDcsLog.exe, transfers the data captured by AN-X to the
host computer over Ethernet. The Windows utility can obtain log data from up to 4 AN-
X-DCSLOG modules at the same time
The Windows logger utility runs as a Windows service. It writes a new file each minute.
The filename includes the date and time.
The AN-X-DCSLOG module also supports unscheduled messaging. It maps DCSNet
data to PLC-5 integer files N100-N155, one file per drop. Any OPC or DDE server or
PLC or computer capable of sending PCCC unscheduled messages over Ethernet can
read the current DCSNet data from the AN-X-DCSLOG module.