Modicon M340 Typical Architecture

Overview

The following topics present graphically some of the devices combination allowed in a system time stamping architecture (it is not an exhaustive list, it represents typical application examples).

Modicon M340 PLC (Local Drop)

In this example, the Modicon M340 local drop contains a BMX ERT 1604 T module.

The BMX ERT 1604 T module is the time stamped events source.

The time source for the BMX ERT 1604 T module is an external clock (DCF77 or IRIG-B time format). The AVEVA Plant SCADA / OFS needs to be synchronized on an NTP server.

NOTE: The OFS is connected to the PLC local drop with an Ethernet link, as a consequence, the PLC local drop needs to have an Ethernet communication module.