Omron WS02-9094G - V1.0 Operation Manual page 47

CS1/CJ1W-PRM21 PROFIBUS Master DTM
Auto-CLEAR Box
Support Box
Bus Parameters Tab
32
Control
Keep Current Mode
Go to CLEAR Mode
(default setting)
Auto-CLEAR defines the Unit's behaviour in case an error occurs in one of the
allocated slave devices, which causes it to stop data exchange with the Mas-
ter Unit. If Auto-CLEAR is enabled, the Unit will automatically transition to the
CLEAR state and force all its allocated slave devices to the 'safe' state, i.e. all
outputs are set to 0, using the Global-Control CLEAR command.
Control
Auto-CLEAR Mode ON
Auto-CLEAR Mode OFF
(default setting)
The Auto Addressing in the Support Box defines the I/O Mapping process
when adding/removing I/O modules or when editing an existing I/O Mapping.
Refer to section 3-5-2 Mapping I/O Data for more details on I/O mapping.
Control
Auto Addressing enabled I/O data mapping will be done by the Master DTM by allo-
Auto Addressing
disabled
The Bus Parameters tab contains the parameters for the communication on
the PROFIBUS network. The Bus Parameters tab is shown below.
The Bus Parameters are a number of settings which define the communica-
tion behaviour and timing on the PROFIBUS network. The Bus Parameters
depend on the selected baud rate, certain slave communication parameters
as well as the number of I/O data bytes exchanged between the Master Unit
and each of the slave devices.
The required combination of Bus Parameters is calculated by the program,
based on the dependencies mentioned above. However, the user can change
selected Bus Parameter manually if the application requires this.
Description
Unit keeps the current mode if the PLC goes to PRO-
GRAM modem (e.g. stay in OPERATE mode).
The Unit goes to the CLEAR mode whenever the PLC
goes to the PROGRAM mode.
Description
Selected Unit transitions to the CLEAR mode in the event
of a network error, e.g. because one or more configured
slaves are not in the Data Exchange mode.
Selected Unit does not transition to CLEAR mode, but
attempts to re-parameterize the slave device.
Description
cating the I/O data in ascending order of slave device
address and selected I/O modules. No memory allocation
gaps are left behind.
New I/O modules are appended to the existing mapping.
Changed I/O modules will be re-allocated to the end of the
list. Memory allocation gaps can be left behind.
Section 2-3