Siemens PLT130
.
1994
4/3
Interface module for 20-m local bus (N-BK)Description and ordering data
1 LED W (yellow), signals ”maintenance protocol stored”
2 LED F (red), signals faults (line protocolfaulty, receiver memory overflow)
3 LEDs (green)
D signals ”Data trans fer on bus”
M signals ”Interface module has master function”
T signals ”Bus processor busy”
B indicatessetting of inter face module on bus B
A indicatessetting of inter face module on bus A
4 DIP switch for function and address settings
5 DIP switch for function and address settings
6 Front plug for 20-m local bus
Fig.4/2 Interface module for 20-m local bus (N-BK), 8 bit
Application
The interface module N-BK is us ed in the remote bus/remote
bus coupler.
The module handles all duties specif ically connected with data
transmission, includi ngoccas ional control of data transfer.
Design
Compact subassembly, double height, with 2 bas e plugs and
one front plug.
Front panel width 30.48 mm = 2 standard slots .
The slot for the module in the subr ack for the bus coupler is
preset.
Mode of operation
Operational signals and fault signals
LED W (yellow)
For maintenance staff only. It signals that diagnosis i nformations
which occurred during operation are stored.
LED D (green)
The receiver control unit of the int erface module signals that
data transfer elements are on the bus . The brightness of the
display depends on the number of transfer elements received.
LED F (red) signals the following f aults:
-- Line protocol faulty, e. g. faulty qualifier signal on the l ocal
bus, parity error in data by te, incorrect message format
-- Receiver memory overflow, e. g. if the bus process or of the
interface module does not correctl y read the receiver memory
-- The bits transmitted on t he 20-m local bus are returned via the
receiver for checking. The fault signal occurs if t het ransmit-
ted and received values differ (bit -by-bit comparison).
LED M (green)
Signals that the interf ace module has the master function.
LEDs A and B (green)
Indicate that the interface m odule is set on bus A or B. Static
light signals active bus .
LED T (green)
Signals that the bus processor is busy. The central processor
generates read and write signals. The display goes out if t he
central processor enters t he STOP status.
Setting of address
In order to differentiate between the indiv idual interface modules
in the autonomous bus system, each interface module mus t be
allocated a so-called parti cipant address. In order to differenti-
ate between several autonomous buses connected via bus cou-
plers, each interface module mus t be allocated a bus address.
These two addresses are set via DIP s witches on the front panel
of the interface module.
Technical data
Powersupply DC5 V
Currentcons umption 1.4 A
Interfaces
-- B a s e p l u g
--Front plug
Centralunit b us, 8 bit
Redundant 20-m local bus output,
open collector,asymmetric,
for connectionof a cab leconnector
withmetal front plug
and contact points
Weight Approx. 0.4kg
Ordering data
OrderNo.
Interfacemodule for 20-m local bus (N-BK) 6DS1 223-8AB
for bus coupler,8 bit
Instructions
Interface module for 20-m local bus Order No.
German C79000--B8000--C406
English C79000--B8076--C406
French C79000--B8077--C406
Spanish C79000--B8078--C406
Created with "Chameleon CMYK PDF Creator" for Wolfgang Strozyk at Siemens AG
This catalog is out of date, see note on page 2