ABB 88TK50-E/R1210 Descrizione del modulo e dell'applicazione - Pagina 3
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PROCONTROL system parameters
The PROCONTROL system parameters define the data trans-
mission from and to the station:
System parameters
Number of cyclic telegrams in the system
FDDI token rotation time (in msec)
Synchronous bandwidth for PROCONTROL
(in % TRT)
Number of event telegrams per frame
Number of PROCONTROL stations
Number of events per second
Non-Recurring max. peak load
•
•
Basic load
Station protocol control
Data transmission
The data transmission on the station bus is handled by a
defined protocol controlled by the 88TK50.
All station modules are subject to this protocol, i.e. no module
is allowed to participate in active data communication without
permission from the protocol.
The protocol control mainly includes the following functions:
--- Identifying those modules which intend to send data tele-
grams,
--- Granting the permit for sending data telegrams over the
station bus,
--- Releasing or inhibiting a telegram transmitted over the
station bus,
--- Controlling the operating modes:
Cyclic mode (transmission of the send telegrams of all
modules in a station),
Event mode (transmission of the event telegrams of all
modules in a station),
Cyclic distribution mode (transmission of the send tele-
grams received over the FDDI),
Event distribution mode (transmission of the event tele-
grams received over the FDDI),
List mode (transmission of the list telegrams).
Address transmission
The system and station addresses of a PROCONTROL station
are set on the 88TK50 module.
In the operating modes 'Autonomous station (AS)' and 'PRO-
CONTROL remote bus (FB)', the address set on switch S700
Fixed
is used as the station address.
value
24 000
The 88TK50 sends this address information in a special tele-
gram when the station is initialized as well as once per station
3
cycle.
85
This ensures that all modules of one and the same PRO-
CONTROL station are given identical system and station
10
addresses, set on the 88TK50.
249
Setting the module, station, system addresses, as well as
500
operating mode and module arrangement monitoring
350
The module, station and system addresses, as well as operat-
ing mode and module arrangement monitoring are set on the
88TK50 module.
Module address 62 is set automatically.
The module is equipped with two switches (S700 and S701).
Switch S700 is used for setting the station address (STA).
Switch S700:
Assignments
S700
Contacts
Significance
Example
ON
STA 129
STA
1
2
3
4
5
1
2
4
8
16
D
D
D
D
D
88TK50/R1210
6
7
8
32
64
128
D
D
D
3