Time Stamping Typical Architecture

Overview

Time stamping can be applied to various architectures that include at least a SCADA, an OFS, and a PLC (Modicon M580, M340, or Quantum with Modicon X80 Ethernet I/O drop).

System Time Stamping with a Modicon M580 CPU

The following table presents the devices combination required in a system time stamping architecture with a Modicon M580 CPU in the local drop:

SCADA	OPC DA Server	OPC UA Server	PLC (Local Drop)			Ethernet Remote I/O Drop
SCADA	OPC DA Server	OPC UA Server	Family	Time Stamping Source	Time Synchronization	Family	Time Stamping Source	Time Synchronization
AVEVA Plant SCADA or 3rd party SCADA ^(1.)	OFS + 1 or more I/O servers	BME NUA 0200 2 modules max per rack	Modicon M580	BME P58 ••••⁴	NTP server	Modicon X80 ^(2.)	BM• CRA 312 10	NTP server ^(3.)
				BMX ERT 1604 T	DCF77 or IRIG-B 004/5/6/7		BMX ERT 1604 T	DCF77 or IRIG-B 004/5/6/7
				Mix of both possible sources: BME P58 ••••⁴ BMX ERT 1604 T	Each source has its time reference: NTP server for BME P58 •••• DCF77 or IRIG-B 004/5/6/7 for BMX ERT 1604 T		Mix of both possible sources: BM• CRA 312 10 BMX ERT 1604 T	Each source has its time reference: NTP server ^(3.) for BM• CRA 312 10 DCF77 or IRIG-B 004/5/6/7 for BMX ERT 1604 T
N.A. Not Applicable 1. Redundant SCADA configuration is compatible with system time stamping. 2. A time stamping architecture may contain several Ethernet remote I/O drops with time stamping sources. 3. A single NTP server can provide time reference to many BM• CRA 312 10 modules and a BME P58 •••• CPU. 4 The SAFE task does not suppot time stamping of internal variables by the BME P58 ••••S CPU

System Time Stamping with a Modicon M340 CPU

The following table presents the devices combination required in a system time stamping architecture with a Modicon M340 CPU in the local drop:

SCADA	OPC DA Server	PLC (Local Drop)	Ethernet Remote I/O Drop
AVEVA Plant SCADA or 3rd party SCADA ^(1.)	OFS + 1 or more I/O servers	Modicon M340	BMX ERT 1604 T	DCF77 or IRIG-B 004/5/6/7	N.A.	N.A.	N.A.
N.A. Not Applicable 1. Redundant SCADA configuration is compatible with system time stamping.

SCADA

OPC DA

Server

PLC (Local Drop)

Ethernet Remote I/O Drop

Family

Time Stamping Source

Time Synchronization

Family

Time Stamping Source

Time Synchronization

AVEVA Plant SCADA or 3rd party SCADA ^(1.)

OFS

1 or more I/O servers

Modicon M340

BMX ERT 1604 T

DCF77 or IRIG-B 004/5/6/7

N.A.

N.A. Not Applicable

1. Redundant SCADA configuration is compatible with system time stamping.