Rockwell-automation 1756-SYNCH ControlLogix SynchLink Module User Manu Manual de usuario descargar pdf (Pagina 33)

Publication 1756-UM521C-EN-P - July 2004

SynchLink Module Features 3-5

Use Last Configuration When Connection to Owner-Controller

Closes - For Module’s Using Firmware Revision 2.18 or Greater

With firmware revision 2.18 or greater, the 1756-SYNCH module can

continue to operate, using its last configuration, when the module’s

connection to the owner-controller closes.

Module Features That Can

Be Configured

The following SynchLink module features are configurable via

RSLogix 5000:

• Communications Format

• Electronic Keying

• Requested Packet Interval

• SynchLink Transmitted Axes

• Transmitted Direct Words

• CST and SynchLink Mastership

Each of these features is described in this section, including

information on which RSLogix 5000 configuration screen should be

used to configure the feature. For an overview of the entire

configuration process, see Chapter 5, Configuring the SynchLink Module.

Communications Format

The communications format defines the connection between the

owner-controller and the module (i.e. determines what type of data is

Table 3.2

If the 1756-SYNCH module is used in

this scenario:

and the owner-controller closes its

connection to the 1756-SYNCH module,

such as for one of the following reasons:

The 1756-SYNCH behaves as follows:

• The 1756-SYNCH module is located

in a chassis with two ControlLogix

controllers.

• The 1756-SYNCH module is the time

master for the local chassis.

• One of the ControlLogix controllers is

the 1756-SYNCH module’s

owner-controller.

• The other ControlLogix controller is

controlling motion based on the CST

set by the 1756-SYNCH module.

• The controller is downloading a new

project.

• The controller is saving its NVS.

• The controller is restoring its NVS.

• The controller is updating the module’s

firmware.

• The controller is removed from

the chassis.

The module continues to act as time

master for the local chassis, operating as

directed by its most recent configuration.

The 1756-SYNCH module’s behavior only

changes if the owner-controller reopens

the connection to the module and

reconfigures the module.

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