Siemens Simatic S7-1500 Manuel de l'équipement - Page 17

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Parameters/address space

4.3 Address space

Address space for configuration as 16-channel DQ 16x230VAC/1A ST

The figure below shows the address space allocation for the configuration as 16-channel

module. You can freely assign the start address for the module. The addresses of the

channels are derived from the start address.

The letters "a to b" are printed on the module; "QB a", for example, stands for module start

address output byte a.

Figure 4-1

Address space for configuration as 2 x 8-channel DQ 16x230VAC/1A ST S

For the configuration as a 2 x 8-channel module, the channels of the module are divided into

two submodules. The submodules can be assigned to different IO controllers when the

module is used in a shared device.

The number of I/O controllers depends on the interface module being used. Please observe

the information in the manual for the particular interface module.

Unlike the 1 x 16-channel module configuration, each of the two submodules has a freely

assignable start address.

Figure 4-2

Note

Substitute value behavior in shared device operation with 2 x 8-channel configuration

If the system is in shared device mode and one of the associated IO controllers goes into

STOP or fails due to, for example, a communication failure, all submodules of the output

module follow the configured substitute value behavior (e.g. switch off).

This means that even when only one IO controller fails, the other IO controllers associated

with the shared device no longer control the assigned submodule of the output module.

Address space for configuration as 16-channel DQ 16x230VAC/1A ST

Address space for configuration as 2 x 8-channel DQ 16x230VAC/1A ST S

Digital output module DQ 16x230VAC/1A ST Triac (6ES7522-5FH00-0AB0)

Equipment Manual, 12/2021, A5E34934069-AC