Omron SYSMAC CJ1W-PRM21, Operation Manual

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PROFIBUS-DP Master DTM
Section 3-3
Global_Control Messages Global_Control messages can be initiated by the user from the Online Opera-
tions tab. The user can select the Global_Control commands.
• Freeze.
• Unfreeze.
• Sync.
• UnSync.
All commands can be transmitted independent from each other, i.e. all can be
send at the same time. However, their effects are not independent, as for
example sending Freeze and Unfreeze at the same time results in an
Unfreeze command at the slaves.
Selecting the Groups Specific groups to send the Global_Control command to can be selected, by
selecting the appropriate checkboxes. Selecting the All Slaves checkbox can
select all slaves, and it will disable the individual check boxes.
Transmit Global_Control
command In order to transmit the Global_Control, press the Transmit button. The com-
mand will be transmitted only once. Both the Global_Control command con-
tents, group select and the transmit command are transferred to the Unit
though its CIO words (see section
4-2-1 Software Switches 1 (Word n) and
section 4-2-2 Global_Control Message (Word n+2) ).
!Caution When transmitting a Global_Control command, it may interfere with attempts
from the PLC Program to write to the same software switches. Care should be
taken to avoid these situations.
3-3-3 Connecting to the PROFIBUS-DP Master Unit
Configuring
communication The PROFIBUS-DP Master DTM uses CX-Server to connect to the Unit for
both downloading a configuration as well as monitoring the master Unit. In
order to setup the communication to the Unit, perform the following proce-
dure.
1,2,3... 1. Open the Master DTM Configuration Interface, Device Setup tab (see sec-
tion
3-3-1 Configuration User Interface ).
2. Select the Unit Number. It must match the unit number set on the PROFI-
BUS-DP Master Unit, through the rotary switch on the front.
3. Select the Configure button to start CX-Server.
CX-Server Up on pressing the Configure button, CX-Server is launched and displays the
CX-Server User Interface as shown below.