User's Manual

Siemens PLT 130
.
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 protocol faulty, receiver memory overflow)
3 LEDs (green)
D signals ”Data transfer on bus”
M signals ”Interface module has master function”
T signals ”Bus processor busy”
B indicates setting of interface module on bus B
A indicates setting of interface 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 used in the remote bus/remote
bus coupler .
The module handles all duties specifically connected with data
transmission, including occasional control of data transfer.
Design
Compact subassembly , double height, with 2 base plugs and
one front plug.
Front panel width 30.48 mm = 2 standard slots.
The slot for the module in the subrack 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 informations
which occurred during operation are stored.
LED D (green)
The receiver control unit of the interface 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 faults:
-- Line protocol faulty, e. g. faulty qualifier signal on the local
bus, parity error in data byte, incorrect message format
-- Receiver memory overflow, e. g. if the bus processor of the
interface module does not correctly read the receiver memory
-- The bits transmitted on the 20-m local bus are returned via the
receiver for checking. The fault signal occurs if the transmit-
ted and received values differ (bit-by-bit comparison).
LED M (green)
Signals that the interface module has the master function.
LEDs A and B (green)
Indicate that the interface module 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 the
central processor enters the STOP status.
Setting of addr
ess
In order to differentiate between the individual interface modules
in the autonomous bus system, each interface module must be
allocated a so-called participant address. In order to differenti-
ate between several autonomous buses connected via bus cou-
plers, each interface module must be allocated a bus address.
These two addresses are set via DIP switches on the front panel
of the interface module.
Technical data
Power supply DC 5 V
Current consumption 1.4 A
Interfaces
-- B a s e p l u g
-- Front plug
Central unit bus, 8 bit
Redundant 20-m local bus output,
open col lector, asymmetric,
for connection of a cable connector
with metal front plug
and contact points
Weight Approx. 0.4 kg
Ordering data
Order No.
Inter fa ce module for 20-m l oca l 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