Installation manual

4/60
4
4.4
Presentation,
characteristics
Modicon TSX Micro
automation platform 0
Uni-Telway bus
The Uni-Telway bus is a standard means of communication between control system
components (PLCs, MMI terminals, supervisors, variable speed drives, numerical
controllers, weighing equipment, etc.).
It is suitable for architectures designed to manage control and monitoring devices via
a PLC, or architectures used for MMI (supervision, etc.).
The Uni-Telway bus requires a master station which manages the allocation of bus
access rights to the various connected stations (known as slave stations).
Presentation
CCX 17
TSX Micro
ATV 58
Premium
Uni-Telway
C
onnections:
p
age 4/62
References:
page 4/63
Characteristics
Physical interface RS 485 non isolated
terminal port
(TER/AUX)
Premium RS 485
isolated module
integrated port (1)
Isolated RS 485/
RS 422 PCMCIA card
20 mA CL PCMCIA
card
Non-isolated
RS 232D PCMCIA
card
Structure Type
Heterogeneous industrial bus
Link
Multidrop Point-to-point
Method of access
Master/Slave principle
Transmission Mode
Asynchronous transmission in baseband
Data rate
1.2…19.2 Kbit/s 0.3…19.2 Kbit/s
Medium
Shielded double twisted pair
Configuration Number of devices
5 max. 28 max. 16 max. 2
Number of connection
addresses
8 max. 96 max.(1 device can occupy several datalink addresses)
Length of bus
10 m max., 1,000 m
with TSX P ACC 01
1,000 m max. excluding tap links 1300 m max.,
excluding tap links
15 m
(unlimited via modem)
Tap links
– 20 m 20 m 15 m –
Service Uni-TE
Point-to-point requests with confirmation (question/response), of up to 240 bytes (2) initiated by any connected device
Unsolicited point-to-point data, without confirmation, of up to 240 bytes(2) initiated by any connected device
Broadcast messages of up to 240 bytes (2) initiated by the master device
Other functions
Transparent communication, via the master, with any device in an X-Way architecture
Diagnostics, debugging, adjustment and programming of PLCs
Security
Check character on each frame, acknowledgement and, if required, repetition of messages ensure security of
transmission
Monitoring
Bus status table, transmission error counters and device status can be accessed by program in each device
Status of the bus and devices connected from the master PLC accessible using PL7 software.
(1) TSX SCY 21601 single format module.
(2) Limited to 128 bytes with TSX Micro/Premium PLC terminal port.
Courtesy of Steven Engineering, Inc. ● 230 Ryan Way, South San Francisco, CA 94080-6370 ● General Inquiries: [phone] ● www.stevenengineering.com
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