Siemens ST PCS 7 OSM/ESM/OMC Industrial Ethernet switches, Industrial Ethernet media converter

© Siemens AG 2007

Communication

Industrial Ethernet

OSM/ESM/OMC Industrial Ethernet switches

	The transmission rate in the ring is 100 Mbit/s; for each ring, up
■Overview
	to 50 Industrial Ethernet OSMs (optical ring) or ESMs (electrical
	ring) can be used. Apart from the 2 ring ports, OSM/ESM has
	other ports (with either RJ45, ITP or BFOC interfaces) to which
	data terminals or network segments can be connected.
	Selection support for the various product versions of OSM is pro-
	vided by the table under "Technical specifications".
	Industrial Ethernet media converter
	Industrial Ethernet nodes with RJ45 TP interface can be con-
	nected via an Industrial Ethernet media converter to one of the
	8 optical ports of an OSM BC08. The two types of media con-
	verter SCALANCE X101-1 or X101-1LD convert the electric
	twisted-pair interface, port type 10/100BaseTX (10/100 Mbit/s,
	RJ45 socket) as follows:
	• X101-1: into an optical interface for multimode glass FOC
	• X101-1LD: into an optical interface for singlemode glass FOC
	The port type of the optical interface is 100BaseFX in each case
	(100 Mbit/s; 2 x BFOC socket).
	Notes:
	Just like the OMC TP11 media converter, the SCALANCE X101-1 does
	not support diagnostics per SNMP protocol.
	For further information on the Industrial Ethernet media converter, see
	Catalog IK PI, Section "Active network components - Industrial Ethernet
	media converter".
The Industrial Ethernet OSM and ESM switches are used to con-
	■Technical specifications
struct Industrial Ethernet networks at the control level:

•The modules are interconnected (backbone) at 100 Mbit/s over

-Glass fiber-optic cables (FO) for OSM

-Twisted pair cables for ESM

•Connection of data terminals or network segments depending on the OSM/ESM type through

-2 to 8 twisted pair ports 10/100BaseTX in RJ45 or 9-pole Sub-D design for 10/100 Mbit/s

-3 or 8 FO ports 100BaseFX with BFOC interface (ST socket) for 100 Mbit/s

•Integral redundancy manager supports high-speed media re- dundancy also for large networks

•Very easy network configuration and extension without com- plex configuration rules or parameterization

■Application

Industrial Ethernet OSM and ESM

The Industrial Ethernet OSM (Optical Switch Module) and ESM (Electrical Switch Module) are used in the construction of switched networks with data transmission rates of 100 Mbit/s in the control level range, in which strict demands are placed on network availability and comprehensive diagnostics are re- quired.

In existing networks, load decoupling and thus increased net- work performance can be achieved by creating segments (di- viding a network into subnetworks/segments) and connecting these segments to an OSM/ESM.

The redundancy manager integrated into OSM/ESM allows In- dustrial Ethernet rings to be constructed in switching technology with high-speed switching over of the communication path on failure of a switch or interruption in the transmission path (recon- figuration time max. 0.3 seconds).

Selection support for product versions of OSM and ESM

			Type and			Preferentially
		number of ports					for use		9
	RJ45(TP)		(ITP)D-Sub	modeMulti-FO	modeSingle- FO	With	For	For ter-
						high	plant	minal
						EMC	bus	bus
						loading		(OS-
								LAN)
OSM TP22	2		–	2	–	n 1)	n	n
OSM ITP62	–		6	2	–	n	n	n
(Standard)
OSM TP62	6		–	2	–		n	n
OSM ITP62-LD	–		6	–	2	n	n	n
OSM ITP53	–		5	3	–	n	n 2)	n 2)
OSM BC08	–		–-	8	–	n 3)	n 3)	n 3)
SCALANCE	1		–-	1	–	n 4)	n 4)	n 4)
X101-1
SCALANCE	1		–-	–-	1	n 4)	n 4)	n 4)
X101-1LD
ESM ITP80	–		8	–	–	n	n 5)	n
ESM TP40	4		–	–	–		n 6)	n
ESM TP80	8		–	–	–		n 6)	n

1)TP cable preferably inside a control cabinet

2)For cross-building connection of Fast Ethernet networks with OSM

3)For design of an optical network, where TP cables are preferably only used inside control cabinets

4)Connects a station with RJ45-TP interface to one of the 8 optical ports of an OSM BC08

5)Inside buildings

6)Inside switchrooms

Siemens ST PCS 7 · November 2007

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