Configuration Station addresses, CS-L2 bridge

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Bus communication

CS-L2 bridge

■Configuration Station addresses

The address range defines the stations which are accessible on the PROFIBUS-TM from the CS 275 bus system via the CS-L2 bridge. From the viewpoint of PROFIBUS-TM, all stations whose addresses are not within the address range must be stations on the CS 275 bus. The first address of the range is always the sta- tion address of the CS-L2 bridge. This must be left vacant when configuring the two buses.

Example:

If max. 20 stations with addresses 40 to 59 are to be connected on the PROFIBUS, the CS-L2 bridge must be configured as fol- lows:

•CS 275 bridge station address (TA) = 39

•Address range: 21

With the max. possible number of 31 stations on the PROFIBUS- TM, 32 vacant station addresses must therefore be present in ascending order on the CS 275 bus. Double assignment of sta- tion addresses on the CS 275 bus and on the PROFIBUS-TM is not permissible.

Performance data:

The bridge provides the following data throughput [tele- grams/s]: either 30 long telegrams or 60 short telegrams in both directions together. There is a reserve for acyclic message transmission of 75 messages/s over a period of 10 s, where

5 messages are assumed per MKS/status telegram.

■Technical Specifications

CS-L2 bridge

Basic device

• Basic system	SIMATIC M7-400 with CPU 486-3, subrack
	and AC or DC power supply module

• Extensions	Interface modules IF 961-DIO, IF 962-
	COM, EXM 478 with IF 964, TPM 478

Power supply

Supply voltage	Current consumption	Power loss

• AC 120 V	Max. 1.14 A	Max. 22.4 VA

• AC 230 V	Max. 0.57 A	Max. 22.4 VA

• DC 24 V	Max. 4.5 A	Max. 33 W

Quantity breakdown

Data throughput (tele-	30 long or 60 short telegrams per second
grams/s, cyclic)

Processing a rush of	75 alarms/s within a period of 10 s, where
alarms	5 alarms are accepted per MKS/status
	message

Delay by the bridge	Max. 100 ms

Bridges connected in	No
series

Bus system	CS 275	PROFIBUS-TM

Data transfer rate	250 kbit/s	1.5 Mbit/s

Number of stations	99 (less PROFIBUS	Max. 32 (incl.
	stations)	bridge)

Max. distances	Local bus: 20 m	Electrical: 200 m
	Remote bus: 4 km	Optical: 16 km

Redundancy

Bridge	No

CS 275	Yes, as option

PROFIBUS-TM	Yes, with optical link module OLM/G12

Configuring

Tools	Commissioning terminal software, ASCII
	editor

Connection	COM1 interface of IF 962-COM interface
	module,
	zero modem cable, 9-conductor

Ambient conditions

Degree of protection to	IP 20
EN 60 529

Permissible ambient tem-
perature

• Operation (horizontal	0 to 60 °C
mounting)

• Transport and storage	-40 to +70 °C

Permissible relative	5 to 95%
humidity

Fan-free operation	Yes

Electrical isolation

• On the CS 275	Yes

• On the PROFIBUS-DP	Yes

Design

Dimensions (H x B x T) in
mm

• With SIMATIC S7/M7	290 x 240 x 220 (plus connector)
subrack

• With migration rack	380 x 483 x 273

9/8	Siemens PLT 112 · 2002

AS 488/TM specifications

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Siemens AS 488/TM Configuration Station addresses, Performance data, CS-L2 bridge, Profibus-Tm

Models: AS 488/TM

Bus communication

CS-L2 bridge

CS-L2 bridge

■Configuration Station addresses

Performance data:

■Technical Specifications

CS-L2 bridge

PROFIBUS-TM

AS 488/TM specifications