Operator Terminal System Manual - 11276916.pdf

System Manual – DOP11A Operator Terminals
Network Functions and Communication
Communication
I/O cross reference The [I/O cross reference] function for displaying an overview of I/Os can be used both
for controller 1 and controller 2. The cross reference indicates the preset controller.
Name list Controller 1 and controller 2 support the name list with all associated functions.
Data exchange
between
controllers
If communication is interrupted by one controller, the terminal will continue communication
with the other controller. The terminal will attempt to reestablish the interrupted
communication with the controller every 10 seconds. As the communication with the
connected system may be affected, you can change the interval using a command. See
section "Commands" in chapter 7.3.
When the terminal is connected to two controllers (two drivers in the terminal), data can
be exchanged between the two controllers (analog and digital signals). You can also
connect two controllers via separate terminals in a BDTP network.
The signal type need not be identical in the two controllers. Data are exchanged via a
virtual data channel between controller 1 and controller 2. You can define eight different
data channels. Data exchange can be time controlled or based on events. You define
the conditions for the exchange of data as well as for the signal intervals for each data
channel under [Functions/ [Data exchange].
Parameter Description
Area Start I/O 1 Start address for the data channel for controller 1. (The subsequent
field is used for specifying possible index registers and
signal formats.)
Start I/O 2 Start address for the data channel for controller 2. (The subsequent
field is used for specifying possible index registers and
signal formats.)
Mode Specify whether the signals for the data channel are analog or digital signals.
Size Specify the number of signals to be transferred in the data channel (start address +
subsequent). The maximum number of signals for a data channel is 255.
Flow 1 → 2 Trigg signal Digital trigger signal that controls the data exchange for the data
channel from controller 1 to controller 2.
Meaning of the signal status:
0 Inactive
1 Transfer
The terminal deactivates the signal after successful transfer.
Interval Indicates the time in seconds that elapses between cyclic transfers
in the data channel.
Set the interval parameter to zero if there is no cyclic transfer.
When the value is higher than zero (1), the parameter has priority
over the trigger signal. In this case, a trigger signal will not be able
to initiate a transfer.
The maximum number of seconds is 65535.
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