Profibus Module Configuration
The Profibus interface is shipped from the factory with the address set to 3, the speed set to
19200 baud, and the memory length set to 122 words.
The memory length to can be reduced to 41 words if only alarms and fault are needed.
Changing any of these parameters requires Procedure 1.
F1.1. Obtain a computer with free RS232 serial port.
F1.2. Start a terminal emulator program such as HyperTerminal
F1.3. Configure the terminal emulator for 38400,N,8,1
F1.4.
Connect the provided DB9 cable from the selected port on the computer to the top
DB9 connector on the Profibus card.
F1.5.
Take the SLC 5/03 PLC CPU out of run mode by turning the key briefly to PROG then
back to REM. Verify that the RUN light is off. The Profibus card will not enter terminal
mode if the PLC is running.
F1.6.
Type asterisk (*) up to 20 times until the following message is displayed: Profibus
Module (DP, FDL)
F1.7. Type locstn xx where xx is the desired Profibus address.
F1.8.
Type baud yyy where yyy is the desired baud rate from the set
{9k6,19k2,93k75,187k5,500 k,750k,1m5,3m,6m or 12m}.
F1.9. Type shownet and verify that the communications parameters are as desired.
F1.10. Type slvtxlen 0 0 zzz where zzz is the desired memory size in words, usually 41 or 122.
F1.11. Type showslv and verify that the communication parameters are as desired
F1.12. If additional information is desired type help and follow the instructions.
F1.13. Type exit to save the changes
F1.14.
Put the SLC 5/03 PLC CPU into run mode by turning the key briefly to RUN then back
to REM. Verify that the RUN light stays on.
Table 8-11. Procedure 1 - Changing Profibus Configuration
Vertex M 203 User Manual
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