Activation Phase; Normal Mode; Slave Lists; Operating Modes - WAGO -I/O-SYSTEM 750 Series Manual

2.1.1.6.1.3

Activation phase

State at the end of the start-up mode, in which the parameters of all the
connected and detected slaves are transmitted. At this point, access is enabled
to the data connections in the slaves.
Depending on the operating mode, either all detected and set-up slaves are
activated (protected mode of operation) or all detected slaves are activated

(set-up mode).

2.1.1.6.1.4

Normal mode

In the normal mode, the master module exchanges data with all active slaves
(data exchange phase), transmits management telegrams (telegrams from and
to the host, management phase) and searches for and activates newly
connected slaves (acquisition phase).
2.1.1.6.2

Slave lists

Information on available or set-up slaves is stored in the master in the form of
lists.
Fig. 2.1.1-6: Slave lists
The list of detected slaves (LDS) includes all slaves, which the master detects
in the AS-Interface circuit and which have a valid address.
The list of projected slaves (LPS) includes all slaves, which the master expects
in the AS-Interface circuit as a result of the set-up.
The list of active slaves (LAS) includes all slaves with which the master
exchanges data. In the set-up mode, this list corresponds to the LDS list and,
in protected mode, it corresponds to the LPS list.
2.1.1.6.3

Operating modes

2.1.1.6.3.1 Set-up mode
The set-up mode is used for configuring the AS-Interface circuit.
Note
In the set-up mode, all detected slaves are activated even when there are
differences between the required and actual configuration.
WAGO-I/O-SYSTEM 750
I/O Modules
Set-up mode
LDS LAS
detected active
750-655 [AS-Interface master module]
Functional description
Protected mode
LPS LAS
projected active
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