Changing Device And Dtm Addresses - Omron SYSMAC CS Series Operation Manual

Setting up a network
Example
6-2-2

Changing Device and DTM Addresses

Changing the Slave
Device Address
1,2,3...
152
The figure below shows an example network consisting of a CJ1W-PRM21
PROFIBUS Master and three OMRON slave devices.
Note that the slave DTMs all have the automatically assigned network
addresses, displayed to the left of the device name.
In order to achieve communication between the Master Unit and its allocated
slave devices, the latter must have the same physical network address as set
in the configuration. The network address on the slave devices are usually set
• through dip-switches or rotary switches on the device, or
• remotely, using the dedicated Set_Slave_Add PROFIBUS service and
stored in the device.
The physical address setting may differ from the slave DTM address, which
was automatically assigned by the Master DTM.
Slave devices which are not equipped with switches to set the address, must
support the Set_Slave_Add PROFIBUS service. Typical device types sup-
porting this address setting method are PROFIBUS PA devices or IP65
devices.
The default address for these devices is 126. This allows them to communi-
cate with a Master unit, with the purpose of changing the address. I/O data
exchange with slave address 126 is not allowed. Usually, these slave devices
also provide a means to store the remotely set address in local non-volatile
memory.
As of Unit version 2.0, the CS1/CJ1W-PRM21 PROFIBUS Master units sup-
port the Set_Slave_Add PROFIBUS service, which can be initiated from the
Master DTM. This service can be sent to any slave on the network, even if it is
not allocated to the Master DTM.
In order to change a slave device's address remotely, first make sure that the
Master DTM is on-line with the Master. Next, open the Set Device Station
Address window:
1. Select the DTM in the Network view.
2. Right click the mouse, and select the Additional functions entry from the
context menu.
3. Select the Set Device Station Address option
The window as shown below is displayed.
Section 6-2