User's Manual

Siemens PLT 112 · 2002
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Bus communication
CS-L2 bridge
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-
grams/s, cyclic)
30 long or 60 short telegrams per second
Processing a rush of
alarms
75 alarms/s within a period of 10 s, where
5 alarms are accepted per MKS/status
message
Delay by the bridge Max. 100 ms
Bridges connected in
series
No
Bus system
CS 275 PROFIBUS-TM
Data transfer rate 250 kbit/s 1.5 Mbit/s
Number of stations 99 (less PROFIBUS
stations)
Max. 32 (incl.
bridge)
Max. distances Local bus: 20 m
Remote bus: 4 km
Electrical: 200 m
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
EN 60 529
IP 20
Permissible ambient tem-
perature
• Operation (horizontal
mounting)
0 to 60 °C
• Transport and storage -40 to +70 °C
Permissible relative
humidity
5 to 95%
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
subrack
290 x 240 x 220 (plus connector)
• With migration rack 380 x 483 x 273
This catalog is out of date, see note on page 3