Lenze PLC Designer PLC Designer (R3-1) - Manual (Page 887)

L-force | PLC Designer
Device Editors

DMS 4.1 EN 03/2011 TD29 885
Modifying an existing PDO mapping
To modify an existing PDO, select it in the list and use button Edit. The dialog Select
item from object dictionary will open, where you can add a new mapping or modify an
existing one. See below for a description of this dialog.
Adding new PDOs and mappings
To add a new PDO, use button Add PDO. The PDO Properties dialog will open, where
you might modify the default entries for the PDO.
Abb. 487 PDO Properties dialog
COB-Id: Each PDO message must have an unique COB-Id (Communication Object
Identifier). The COB-Id field shows the current definition of the COB-Id as defined in
the EDS-file. An usual way is to generate it basing on the node number of the module
whereby "$NodeID" is used to represent the actual node number. Example:
"$NodeID+0x200". The current entry however might be modified by the user.
Inhibit-Time (x 100µs): This field is only editable, if the device supports this function:
The Inhibit Time is the minimum time multiplied with 100µs between two messages
transmitted via the same PDO. This setting for example can be used to avoid, that
PDOs, which are sent each time when a value changes, get sent too often. The default
entry will be "0" Possible values 0-65535.
Transmission Type: Here the desired transmission mode can be set. Possible settings:
acyclic - synchronous: the PDO will be transmitted synchronously but not periodically.
(default)
cyclic – synchronous: the PDO will be transmitted synchronously, whereby the Number
of Sync's gives the number of synchronisation messages, which lie between two
transmissions of this PDO.
synchronous – RTR only: the PDO will be updated after each synchronisation message
but not sent. It is only sent when there is an explicit request to do so (Remote
Transmission Request)
asynchronous – RTR only: the PDO will only be updated and transmitted when there is
an explicit request to do so (Remote Transmission Request)
asynchronous – device profile specific and asynchronous - manufacturer specific: the
PDO will only be transmitted when specific events occur.