Honeywell Experion PKS User Manual Download

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7.16 Configuring the PDC

The

PDC

tab of the DSB block is used to define the PDCs. The slave device data is accessed through the

configuration in the PDC tab. The PDC tab is divided into upper and lower grid. The upper grid is used to
configure the module types. The lower grid displays the channels and the channel-related information of the I/O
modules selected in the upper grid.

Attention

•

You can use the following procedure for configuring parameters that are generic to all DSBs. However, you must
refer to the <DSB name> specific PDC configuration guidelines section for information on DSB specific
parameters. For example, for Generic DSB specific PDC configuration, you can refer to the section “Generic DSB
specific PDC configuration guidelines.”

•

For Turck Excom DSB and Siemens ET200M DSB, the PDC configuration must be done through IOM
configuration tab.

Perform the following steps to configure the PDC

Click the

PDC

tab in the DSB block configuration form.

The PDC tab configuration form appears.

In the

PDC Type

list, select the appropriate I/O module.

This list represents the module types supported by the DSB. The PDC types that appear in this list may vary
based on the DSB that is selected.
When you select a specific PDC type in the upper grid, all the channel information and the channel
parameters of the configured I/O modules appear in the lower grid.

Attention

After the PDC is associated with a PIOMB, you cannot modify the PDC type.

In the

PDC Description

column, type a description for the PDC.

The description you provide here can be used to identify the correct PDC when associating the PDCs to the
PIOMB.

In the

Net Tag Name

column, select the correct net tag name against the PDC type.

The tag names that appear in this list are the names that you have defined while configuring the slave device
in the “Profibus Network Configuration Tool”. The net tag name is unique for each I/O module. You cannot
select the same net tag name for two I/O modules inside a slave device. However, you can use the same net
tag name for another slave device.

Select the

Hold on failure

check box if you want the DSB to hold the last output value in the event of a

communication error between the C300 and the PGM.

In the

Number of Channels

column, type the number of channels that the PDC supports.

By default, the number of channels is set to "1."

In the

Channel Description

column, type a brief description (maximum of 32 characters) of the channel.

In the

Channel Type

column, select the type of the channel.

• The channel types can be Digital Input, Digital Output, Analog Input, and Analog Output.
• The values that appear in this list may vary based on the DSB selected.
• If you have used the fixed PDC types, the channel types are displayed automatically.
• You must define the channel type if you have used the configurable input/output PDCs.

In the

Channel Data Type

column, select the data type of the channel.

• The channel data types can be Boolean, Uint8, Uint16, Uint32, Int8, Int16, Int32, and Float32. The

values that appear in this list may vary based on the DSB selected.

• If you have used the fixed PDC types, the channel data types are displayed automatically.

7 DEVICE SUPPORT BLOCK (DSB)

156

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