Select the menu command Edit > Object Properties

Result: The "Group Assignment" tab appears with a table in which you can assign the SYNC/FREEZE groups for the DP slave.

Note

You can assign a maximum of one SYNC and one FREEZE group to each DP slave.

Exception: If a CP 3425 is used as DP master, a maximum of eight groups (SYNC and/or FREEZE groups) can be assigned to each DP slave of this master system (see CP 342-5 documentation).

What You Should Know About the SYNC and FREEZE Control Commands The SYNC and FREEZE commands can be used to perform event-driven synchronization of the DP slaves. The DP master sends the control commands simultaneously to a group of DP slaves of its master system. Those slaves that have failed or are currently reporting diagnostics are ignored.

The requirement for synchronization using control commands is that you have assigned the DP slaves to SYNC and/or FREEZE groups.

Für eine S7-CPU verwenden Sie den SFC 11 (DPSYC_FR) zur Synchronisation der DP-Slaves.

Configuring the Distributed I/O (DP)

SYNC Control Command

The DP master uses the SYNC control command for a group of DP slaves to freeze the states of their outputs at their current values.

In the following frames, the DP slaves store the output data of the DP master, but the states of the DP slaves' outputs remain unchanged.

After every new SYNC control command, the DP slave sets its outputs to the values that it stored as output data of the DP master.

The outputs are only then cyclically updated again when the DP master sends the UNSYNC control command.

FREEZE Control Command

After receiving the FREEZE control command from the DP master, the DP slaves of a group freeze the current state of their inputs and transfer these cyclically to the DP master.

After every new FREEZE control command, the DP slave freezes the states of their inputs again.

The input data are only then cyclically transferred from the DP slave to the DP master when the DP master sends the UNFREEZE control command.

Configuring the Distributed I/O (DP)

3.6 Other DP Slave Configurations

3.6.1 ET 200L and DP/AS-i Link

When configuring the DP slaves ET 200L and DP/AS-i Link (distributed I/O/actuator-sensor interface), the following applies:

• ET 200L can be expanded using Smart Connect (SC) a channel at a time

• DP/AS-i Link is configured with actuator-sensor interface slaves; see below.

When placing a DP/AS-i Link, a configuration table is displayed automatically in which you can place the actuator-sensor interface slaves from the "Hardware Catalog" window.

3.6.2 ET 200S

Introduction

DP slaves and IO devices of the ET 200S family are configured like other modular DP slaves and IO devices.

Special feature: Digital electronic modules with an address space of 2 bits initially occupy 1 byte when they are inserted in the configuration table (Details view).

However, the occupied address space can be compressed after configuration by means of the Pack Addresses button.

Example:

Before Packing

Addresses

After Packing Addresses Module I Address I Address DI_1_Module 10.0 to 10.1 10.0 to 10.1 DI_2_Module 11.0 to 11.1 10.2 to 10.3

Note

Addresses cannot be packed in the GSD-based variant of the ET 200S IO device.

Configuring the Distributed I/O (DP)

Procedure: "Packing" Address Spaces Together

1. Select one contiguous range of modules whose addresses are to be packed.

2. In the Details view of the configuration table, click on the Pack Addresses button.

The address areas for inputs, outputs, and motor starters are packed separately.

- The beginning of the address area is defined by the address of each module that is selected first and has the form X.0.

- If the bit address is not 0, the next (available) byte address from which the selected area can be inserted is used automatically, for example, (X+1).0.

- If there is no other contiguous range, packing takes place automatically into available address spaces.

Undoing Address Packing

If you want to set the start address of a module with a "packed" address again as a byte address, proceed as follows:

1. Select the module with the packed address (e.g. 100.2).

2. Click the "Pack Addresses" button.

The start address of the module will be set to the next free byte address (e.g. 101.0, if this address is still free).

Special considerations for modules with packed addresses

When a module has a packed address, it can no longer be assigned a slot from the point of view of the CPU. For this reason SFC 5 (GADR_LGC) reports the error message W#16#8099 (slot not configured) for the actual slot of the module.

SFC 49 (LGC_GADR) and SZL-ID W#16#xy91 (module status information) are also incapable of evaluating a module with packed addresses.

From the point of view of the CPU, interrupts can also not be assigned for a module with packed addresses. Therefore, in DPV1 mode an additional diagnostic address is automatically assigned for the module.

The features "Pack addresses" and "Plug/remove interrupt" are mutually exclusively.

Configuring the Distributed I/O (DP)

Rules for Configuring an ET 200S

• Slot 1: Only power module (PM-E or PM-D)

• To the left of an electronic module (EM): only an EM or a power module (PM-E or PM-D)

• To the left of a motor starter (MS): only an MS or PM-D or a power module (PM-D Fx (1..x..4) or PM-X)

• To the left of a PM-X: only a motor starter or a PM-D

• You must pay attention to the assignment of the PM-E voltage range and the EM voltage range.

• A maximum of 63 modules and one interface module are permitted.

Special Features of Assigning Parameters to Reference Junctions Note the following sequence:

1. In the configuration table (Details view) of the ET 200S: place an analog electronic module and set a channel for the reference junction function to the measuring range "RTD-4L Pt 100 Cl."

2. Double-click the ET 200S (properties of the DP slave interface connection):

specify reference junction(s), slot and channel of the RTD module

3. Place an analog electronic module for measuring temperature by means of thermocouple (TC module) and assign the reference junction number (of the RTD module) as parameter.

Configuring the Distributed I/O (DP)

3.6.3 ET 200S with Option Handling

Requirements for Option Handling

• Power submodule: PM-E DC 24V/AC120/230V or PM-E DC 24..48V/AC 120..230V with option handling (as of STEP 7 V5.3)

• Interface submodule: IM 151-1 STANDARD (6ES7 151-1AA03-0AB0) or IM 151-1 FO STANDARD (6ES7 151-1AB02-0AB0)

Overview of the Procedure

Option handling allows you to prepare the ET 200S for future expansions (options).

The following section provides overview of the function and procedure (for a detailed description, see the ET 200S Distributed I/O manual):

1. Install, wire, configure and program the planned maximum configuration for