I have an installation with an S7-414 and a CP441-1 connected to a serial modem, i've been trying to get data transmitted to a remote system. however every time i try to dial out with the modem, the modem hangs up as soon as it detects a dialtone. I know i'm using the right SFC/SFB (BSEND and BRCV an V24_STAT en V24_SET) so it must have something to do with the signal handling of the modem but i can't figure out what. So is ther eanybody who's done that before and can tell me what the problem area's are
Siemens S7 communcation with Cp441 and modem
- Thread starter noyb
- Start date
Mike Williams
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