Block library TeleControl ST7
5.7 Master copies
TIM 1531 IRC
Operating Instructions, 02/2018, C79000-G8976-C468-02
233
Input for triggering a permanent connection to the subscriber specifie
d with
A permanent connection to the subscriber is triggered with a 1 signal at this
input if there is currently no permanent connection to this subscriber. The i
n-
put is then automatically reset by the FC. If an input of a digital input is spec
i-
fied (I 0.0 ... I n.7), you are responsible for resetting the signal at the input at
the latest before the termination of the existing permanent connection.
A 1 signal at the input "PermanentCall_On" also activates the time specified
with "MaxConnectTime"
if it is greater than 0.
Depending on whether the subscriber can be reached over a dial
-up connec-
tion or a dedicated line, the command to establish the permanent connection
is processed as follows and indicated at the "PartnerStatus" output:
For a dial-up connection:
A dial-up connection is established by the master TIM to the appropriate
subscriber and, regardless of the data traffic, maintained until the terminate
command is sent.
The current status of the permanent connection is indicated in the
PartnerStatus output word with the bits 4 ... 6 (see PartnerStatus
parameter).
In this case the master TIM operates in polling mode with the stations. A
permanent connection is implemented in this case by ’continuous polling’
of the subscriber. This is actually an intermittent poll to the subscriber; in
other words, the other subscribers on the dedicated line network are still
polled but the preferred subscriber is polled again after every poll to a
’normal’ subscriber .
The current status of the continuous polling is indicated by bit 8 in the
"PartnerStatus" output parameter.
Special feature with stations:
A permanent connection cannot be established from a station. This control
input cannot therefore be used when FC PartnerMonitor is used in a station.