Honeywell Experion PKS User Manual page 222

9 PROFIBUS I/O MODULE (PIOMB) FUNCTION BLOCK
The PDC that is associated to the PIOMB appears in the PDC Name Reference box. Also, the PGM Name
area displays the PGM name to which the DSB is associated.
11 In the PDC Subscription Rate list, select the rate at which the PGM must publish the process data to the
PIOMB.
Click the Module Configuration tab.
12
The Module Configuration tab displays the associated PDC related information such as PDC description,
PDC number, number of channels associated with the PDC, and the connection status.
13 Click the Channel Configuration tab.
14 Click the Runtime Data tab.
15 Use the online help as a guide to complete the configuration entries on other tabs.
16 Click OK.
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Attention
• By default, the PDC data subscription rate is set to 50 ms. However, for some configurations it is not necessary
to receive process data every 50 ms. In such scenarios, you can reduce the PDC data subscription rate as
required to avoid receiving fresh process data at a rate faster than what the configured strategies consume.
• PDC data subscription rate is also referred as "PDA subscription rate."
• You can change the PDC data subscription rate only if the PIOMB is not loaded. Also, this rate can be
configured for the entire PDC and not individual channels.
Attention
• You cannot configure any parameters from the Channel Configuration tab. You can only monitor the
channel-specific configuration data such as channel description, channel type, channel data type, channel high
range, and channel low range.
• Based on the channel type of this PDC, you must associate the specific PROFIBUS I/O channel blocks to the
CM to view the channel data. In this example, the channel type is Digital input and therefore you must assign a
PBDICHANNEL to the Control Module. Fore more information, see "Assigning a PROFIBUS Channel to
PIOMB" on page 223.
Attention
• You cannot configure any parameters from the Runtime Data tab. You can only monitor the live process data
of all the channels of an I/O module from the Runtime Data tab in the Monitoring view.
• The process data for a specific channel appears in the respective column, depending on whether the channel
type is a digital channel, analog channel, or numeric channel. However, the status of all channels of the
selected PDC appear in the Channel Status column. For more information, see "PIOMB block state after
configuration and load" on page 225.
Attention
With R410, you can modify the values of the following parameters even after a PDC is associated and connected
to a PIOMB. However, you must ensure that you reload both the DSB and the PIOMB after modifying the
parameter value. If you do not reload both the DSB and the PIOMB, there may be a break in the connection
between the DSB and the PIOMB.
• Number of Channels (NUMCHANNEL)
• Channel Description (CHDESCRIPTION)
• Channel Type (CHANNELTYPE)
• Channel Data Type (CHANNELDATATYPE)
• Channel Low Range (CHLOWRANGE)
• Channel High Range (CHHIGHRANGE)
• Channel Data Offset (CHDATAOFFSET)
• Channel Bit Offset (CHBITOFFSET)
• Input Signal Type (INPUTSIGNALTYPE)
• Output Signal Type (OUTPUTSIGNALTYPE)