Siemens SIMATIC PCS 7 Operating Manual page 87

5. Enter the device-specific information in the "Communication" tab of the Properties dialog
for the MODBUS network.
MODBUS communication type: Serial or IrDA (infrared)
Serial
IrDA
Response
time
6. To check if the correct network and the correct port are assigned to the COM interface,
double-click the "PC" object in the right window. Select the "COM interface" object in HW
Config, and select the Object Properties menu command in the shortcut menu.
Note
The COM port is almost always "1" for notebooks. Since most PCs have two COM ports,
you have to specify which port the device is connected to in this tab.
7. To insert the MODBUS device, select the "MODBUS network" object in the right window
and right-click. In the displayed shortcut menu, select the Insert New Object > Object
command.
In the displayed dialog box, enter the name of the MODBUS device.
8. To set the device address, select the inserted MODBUS device in the right window and
right-click. Select the Object Properties command in the displayed shortcut menu.
9. Enter the device-specific information (MODBUS address 0-247) in the "Communication"
tab of the Properties dialog for the MODBUS device.
10.To change the device address, select the inserted MODBUS device in the right window
and then select the Object Properties menu command in the shortcut menu. Select the
"Communication" tab in the displayed dialog and enter the new short address.
11.Start SIMATIC PDM by double-clicking the newly inserted MODBUS device in the right
window. Select the relevant device in the menu tree (only required for the first call), and
assign parameters for the device.
Note
Multiple PCs in one project
If there are several PCs in your project, you have to define one of them as the current
one. To do this, select the desired "PC" object in the left window and then select the menu
command Options > Define Current PC.
Help for SIMATIC PDM (V8.2)
Operating Manual, 02/2014, A5E33203676-AA
The interface must be set accordingly on the PC station.
No additional setting required.
Once the device is within range, it is available for MODBUS communication.
Only one infrared device can be coupled to MODBUS at a given time. Several devices
can be coupled under Windows.
General timeout within which the device is allowed to report. If the timeout is too long, the
communication is slowed. If it is too short, some devices may not be found.
Functions
7.3 Device management
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