Cascade Driver for Hilscher Fieldbus CIF Cards: Version 4.1
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# updateBufferGroups

updateBufferGroups -- triggers an I/O cycle of buffers and point groups.

## Synopsis

    (updateBufferGroups [card_id [update_mode]])

## Parameters

`card_id`

  An optional card ID. If not specified, the command is applied to all available cards.

`update_mode`

  This parameter is entirely card dependent.

## Returns

`OK` if successful, or one of the following errors:

        (error "updateBuffers DR_ERR_DEV_INVALID (time) invalid device: card_id")

        (error "updateBuffers DR_ERR_DEV_IO_FAILURE (time) I/O failure (error_code) on device card_id")

        (error "updateBuffers -1 (time) Command invalid: Card card_id using interrupt mode")

## Description

This command triggers an I/O cycle of the buffers and point groups. It is identical to the `updateBuffers` command, except that in addition, the output group points are first scanned to update the data and, after the buffer data transfer, the input group points are scanned for updated values. This command is typically sent as a command and not used in configuration file.

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