We are connecting our plc(RS232) with the micromaster(RS485), and in the micromaster is the communication configured in USS(P910=1) and in the plc the communication is configured as freeport SM30.0=1. But we are not using the USS blocks available on Siemens. Can anybody tell us where we can find or how we have to program the micromaster in freeport?
uss<->freeport
- Thread starter juan
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Juan,
from your post I detect you are using an S7-200 PLC. The programming port of that PLC is an RS485 port. The electrical characteristics don't change by using an other protocol (freeport). The only way to get a real RS232 is to attach a converter (eg. PC/PPI cable) to the programming port.
Kind regards,
from your post I detect you are using an S7-200 PLC. The programming port of that PLC is an RS485 port. The electrical characteristics don't change by using an other protocol (freeport). The only way to get a real RS232 is to attach a converter (eg. PC/PPI cable) to the programming port.
Kind regards,
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