:
*1. PROFIBUS DP Network
*2. PROFIBUS DP Master
*3. Display + PROFIBUS DP Slave Unit
*4. PROFIBUS DP Slave
The I/O memory size of the PROFIBUS DP Master specifies maximum number of the Display which can connect to the PROFIBUS DP Master.
For example, when the I/O memory size of the PROFIBUS DP Master is 64 words, assuming the PROFIBUS slave uses 16 words (total of input and output area) per unit, maximum number of the connectable Display will be 4 units.
Please refer to each maker's manual of the External Device for more detail on memory size.
To communicate the Display with the PROFIBUS DP Master, you need to register the Display as the PROFIBUS slave. Please refer to each maker's manual of the External Device for more detail on how to register as slave.
When you select the Siemens SIMATIC Series for the PROFIBUS DP Master, the necessary files for the slave settings are included in the [\Fieldbus\PROFIBUS] folder in the CD-ROM of BLUE. Please refer to "README.TXT" in the same folder for each file description and the setting method.
The Display can communicate with the PROFIBUS DP Master by simple method called Direct I/O.
In this method, input and output area in the Display will be mapped into input and output area in the PROFIBUS DP Master respectively.
The figure below shows the example when taking Siemens SIMATIC Series as the PROFIBUS DP Master, and using 16 words each for input and output area size.
The input and output area size in the Display must be identical to those in the PROFIBUS DP Master.
Use BLUE to set the input and output area size in the Display.
Use the ladder software to set slave input of the Display, the address on the PROFIBUS DP Master which will be the start address for slave output (shown as IW100, QW100 in the figure below), the input and output area size on the PROFIBUS DP Master. Please refer to each maker's manual of the External Device for more detail on the settings.
*1. PROFIBUS DP Master
*2. PROFIBUS DP Slave (Display)
*3. External Device Output Area
*4. External Device Input Area
You can perform the packet transfer in Siemens SIMATIC Series.
For the packet transfer, you need the interpreter program corresponding to the Siemens SIMATIC Series. The interpreter program is included in the [\Fieldbus\PROFIBUS] folder in the CD-ROM of BLUE. Please refer to "README.TXT" in the same folder for each file description and the setting method.
Examples of communication settings of the Display and the External Device, recommended by Pro-face, are shown.
WARNING
UNINTENDED EQUIPMENT OPERATION
Read and understand the instructions in this section to ensure data is properly transferred.
The following cable diagrams may be different from cable diagrams recommended by External Device Manufacturer.
Please be assured there is no operational problem in applying the cable diagram shown in this manual.
The FG pin of the External Device body must be grounded according to your country's applicable standard. Refer to your External Device manual for details.
SG and FG are connected inside the Display. When connecting the External Device to SG, design your system to avoid short-circuit loops.
Connect an isolation unit if the communication is not stable due to noise or other factors.
Range of supported device address is shown in the table below. Please note that the actually supported range of the devices varies depending on the External Device to be used. Please check the actual range in the manual of your External Device.
WARNING
UNINTENDED EQUIPMENT OPERATION
All devices are allocated to the same memory range. Therefore, when used areas of the memory range overlap, it may not be possible to read or write the correct value(s).
Internal marker (M device) address allocation example:
In the above situation, when a value is written to MB1, the first byte of MW1 is also changed.
32bit (MD) and 64bit (ML) are also allocated like 16bit (MW).