Technical data

SINAUT TD7 software package for the CPU
2.6 Blocks for optional expansion
Software
308 System Manual, 07/2009, C79000-G8976-C222-07
Name: PermanentCall_On
Declaration: IN_OUT
Data type BOOL
Explanation Input for triggering a permanent connection to the subscriber specified with
PartnerNo.
Range of
values:
Input
Bit memory
Data bit
I 0.0 ... I n.7
M 0.0 ... M n.7
DBm.DBX 0.0 ... n.7
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
input is then automatically reset by the FC. If an input of a digital input is
specified (I 0.0 ... I n.7), the user is responsible for resetting the signal at the
input. This should be done at the latest before terminating 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
connection 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).
For a dedicated line:
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 word (see PartnerStatus parameter).
Note
A permanent connection cannot be established from a station. This control input cannot
therefore be used when FC PartnerMonitor is used in a station.