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EDM V2.1 / I nstallat ion Ma nual Ausgabe 11/2012 E dition 9 3 Data t r ansfer SIPLACE EDM was d eveloped t o make it pos sible to s tore SIPL ACE Pro da ta on a dec entrali zed basis. One requirem ent to r each this go …

EDM V2.1 / Installation Manual Ausgabe 11/2012 Edition

2.7 EDM notifications

The EDM Service converts the change notifications received from the lines into a human-readable

form and distributes these to the appropriate locations. The type of messages sent and the

recipients of the messages can be configured. This will be explained in more detail later on (see

section 5.3.7, Notifications/Rules…).

2.8 EDM Line Server

The EDM line service is the counterpart to the EDM master service. It monitors the changes made

by users to the local SIPLACE Pro data (SPI), documents the changes and sends them to the

master service for entry in the EDM Clearing Pool.

2.9 EDM Tool

The EDM Tool is a utility that runs on all EDM computers and that monitors the status of the EDM

services (master service and line service) and the integrity of the EDM configuration files.

It also allows you to enter comments for new notifications on the Line Server.

Comments can also be entered on a computer other than the Line Server. To do this, the EDM

Tool must be installed on this computer and an entry in the configuration file of the Line Server

must be adapted accordingly (see section 6.3.6.14 EDM tool endpoint).

As a singleton, the EDM Tool only runs in one user session a time, i.e. on server operating systems

only one user, who is logged in, will be able to run the EM Tool.

EDM V2.1 / Installation Manual Ausgabe 11/2012 Edition

3 Data transfer

SIPLACE EDM was developed to make it possible to store SIPLACE Pro data on a decentralized

basis. One requirement to reach this goal is to guarantee an efficient, selective data transfer from

the Master Server to the Line Servers and in the opposite direction. Changes made at the local

level are integrated into the central database so that it contains data that is valid – i.e. as up-to-date

as possible – throughout production.

From a technical point of view, the bi-directional data transfer rests on the data import and export

functionality of SIPLACE Pro, which is also available from SIPLACE Pro Desk.

SIPLACE EDM implements a process-based solution for data transfer. The program provides three

approaches to control and monitor the data flow:

● pull mode

● push mode

● forced pull mode

3.1 Pull mode

On the one hand, the pull mode represents a stand-alone process controller for the data transfer,

and on the other hand, it serves as basis for the forced pull mode. For this reason, this section will

only deal with the aspects common to both modes, and the following section will only deal with the

aspects specific to the forced pull mode.

The basic idea behind the forced pull mode as well as the "simple" pull mode is that the line

engineer is responsible for the production data and for the decision regarding which data applies to

the line since the line engineer is responsible for ensuring that the line produces.

To do this, the line engineer manually starts the pull mode via the SIPLACE EDM Client. He or

she selects the data to be transferred. The data preparation engineer, though, is provided with

configuration options he or she can use to actively intervene in the process (see section 5.3.6,

Application templates). The data preparation engineer specifies what objects are available for each

line and what object types are to be overwritten when performing a download to the line. In general

terms:

– The data preparation engineer is responsible for the correctness of the object types overwritten

during the download.

– The line engineer is responsible for the object types that are not overwritten.

The data preparation engineer, however, has neither influence on whether or not the line engineer

pulls new data from the Master Server, nor when this data is pulled.

3.2 Push mode

In push mode, the data preparation engineer selects the data he or she wishes to make available

to the lines they are responsible for. They use an application template (see section 5.3.6) to

select one or more line computers and the objects (e.g. optimized recipes) that they want to

transfer to the selected line(s). Depending on the settings in the configuration, the line engineer is

forced to accept these changes immediately or later, may reject them, or is simply notified that data

has been changed. With the EDM Data Transfer Manager, the data preparation engineer always

has an overview of the status of the individual transfer packages on the EDM lines.

EDM V2.1 / Installation Manual Ausgabe 11/2012 Edition

In contrast to the two pull mode variants, the data preparation engineer has the sovereignty over

the status of the data in push mode.

Push mode and pull mode should be used independently. EDM can be operated in mixed mode

without problems.

3.3 Forced pull mode

With forced pull mode, SIPLACE EDM provides an option of ensuring that the line data engineer

is always working with relatively up-to-date data. This mode allows for the specification of a

maximum time period between two downloads. This should ensure that the data on the lines is

never older than the prescribed period. If no data is downloaded from the Master Server during the

time defined, then the data preparation engineer is informed of this via a SIPLACE EDM notification

and can initiate organizational activities to ensure the data is downloaded and up-to-date.