Return-Path: Received: from post.thorcom.com (post.thorcom.com [195.171.43.25]) by klubnl.pl (8.14.4/8.14.4/Debian-8+deb8u2) with ESMTP id w3QKHuNQ004906 for ; Thu, 26 Apr 2018 22:17:57 +0200 Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1fBnH4-0003Im-44 for rs_out_1@blacksheep.org; Thu, 26 Apr 2018 21:13:50 +0100 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1fBnH3-0003Id-QV for rsgb_lf_group@blacksheep.org; Thu, 26 Apr 2018 21:13:49 +0100 Received: from mail-wm0-x22b.google.com ([2a00:1450:400c:c09::22b]) by relay1.thorcom.net with esmtps (TLSv1.2:ECDHE-RSA-AES256-GCM-SHA384:256) (Exim 4.89) (envelope-from ) id 1fBnH0-0004St-47 for rsgb_lf_group@blacksheep.org; Thu, 26 Apr 2018 21:13:48 +0100 Received: by mail-wm0-x22b.google.com with SMTP id a8so15054665wmg.5 for ; Thu, 26 Apr 2018 13:13:45 -0700 (PDT) X-DKIM-Result: Domain=gmail.com Result=Good and Known Domain DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=mime-version:in-reply-to:references:from:date:message-id:subject:to; bh=rCcu52q7Bj0dpQ4uz5UGN5XpLitQoHu+6qGlFr2+SKI=; b=eo0v2cRzadCpLbOX8FAnTHjdHr7kfh0WwG6BSlKhhK8RoMuXSvBqVAUMnQvhK3RrmG ZLcDIUBNOXlAzNgoi6NQxfHxia8NsQ2phfkC16elQwfdQAyzBUCNkzq+2+GOgs+NhRIn JLpuvQpm3dvm2fMlnwLfhPDWh8E4AntunEs/FIxBJA6zlayE2eNtZJRry6y8itv7epwp DzyOj7wUfHYUEW4zhtAyU8wcicvYru+cHFf5fKClN6roFyboxgyohDlAngYs5nfqdRob WQcAxEkw2suMGaNOeQeLcRVeSJiMo7twU7eRFqCr7k+k4acrAX9SLynkApaiaDX5z+s5 jKmg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:in-reply-to:references:from:date :message-id:subject:to; bh=rCcu52q7Bj0dpQ4uz5UGN5XpLitQoHu+6qGlFr2+SKI=; b=E9lJfB9/Puvr8DKemUTcdtqp2aWE7Z3egpVMbBlQdldZv9haVi4B3BjCYyYN04kc3z le6ncFQSGPow8Q6G+SrCP5q9RmBFGihrhB7Z6oy1ooktFcalBEcRQoySrAN+ctt/HQGS sS6bVQ5dQyxVFDmad7rBB8pSwKiKr3syEm9nibms3qfEMh5MBm5Liku7v9FzeYy5hoLf EjuB6mGqXXGB8gXd0+Qr6d8SsHPtpyQrpsYcVzZ7UNhi0ZQnyOHInJAT4UDwodHBJCCR AO9gQmT2AYjpBX5PSFZv+hT7D9DrABDeNImdno0BzueRoDTtWx1j0GB2FKLCpRoa+XR6 L/yg== X-Gm-Message-State: ALQs6tB5i7iGyE/jiNxroKmw85lYGP7MiuO9k47g3NptlouqmkHvXE4d B1a5ksIoSY8OFiQHnlQb0hunsY1BAtX20AUnPCY= X-Google-Smtp-Source: AIpwx48z9JeaqyW+qNwmeHlbON2ZntOwFk0/0HetLq0BOWiY0f/vz+TjLuOM2yYzRFqHsRAcxcm5y9JCdp2qkifhLEg= X-Received: by 10.80.153.158 with SMTP id m30mr33050267edb.111.1524773624996; Thu, 26 Apr 2018 13:13:44 -0700 (PDT) MIME-Version: 1.0 Received: by 10.80.159.130 with HTTP; Thu, 26 Apr 2018 13:13:44 -0700 (PDT) In-Reply-To: <61a93e27-9882-1772-fc4c-631d94dd8a90@dctower.co.uk> References: <1215299641.20180411111636@gmail.com> <637789342.20180411123709@gmail.com> <1523448409377.3567@kuleuven.be> <76264206.20180411132433@gmail.com> <1373945705.20180426202934@gmail.com> <61a93e27-9882-1772-fc4c-631d94dd8a90@dctower.co.uk> From: Andy Talbot Date: Thu, 26 Apr 2018 21:13:44 +0100 Message-ID: To: LineOne X-Spam-Score: 0.0 (/) X-Spam-Report: Spam detection software, running on the system "relay1.thorcom.net", has NOT identified this incoming email as spam. The original message has been attached to this so you can view it or label similar future email. If you have any questions, see the administrator of that system for details. Content preview: Real RS232 are +Ve when asserted, -Ve when off. That is what it was designed for. If a TTL level converter were used, inversion would be necessary. Of course, with an optical input SSR, you'd do that just by connecting the input the other way round. Opto-isolators make things so simple [...] Content analysis details: (0.0 points, 5.0 required) pts rule name description ---- ---------------------- -------------------------------------------------- 0.0 FREEMAIL_FROM Sender email is commonly abused enduser mail provider (andy.g4jnt[at]gmail.com) 0.0 HTML_MESSAGE BODY: HTML included in message 0.0 T_DKIM_INVALID DKIM-Signature header exists but is not valid X-Scan-Signature: b08ad821341ca291e1fd930f7b9292d3 Subject: Re: LF: Windows software to drive a relay at a given time? Content-Type: multipart/alternative; boundary="94eb2c197a2247e8af056ac6063b" X-Spam-Checker-Version: SpamAssassin 2.63 (2004-01-11) on post.thorcom.com X-Spam-Level: X-Spam-Status: No, hits=0.9 required=5.0 tests=HTML_30_40, HTML_FONTCOLOR_UNSAFE,HTML_MESSAGE autolearn=no version=2.63 X-SA-Exim-Scanned: Yes Sender: owner-rsgb_lf_group@blacksheep.org Precedence: bulk Reply-To: rsgb_lf_group@blacksheep.org X-Listname: rsgb_lf_group X-SA-Exim-Rcpt-To: rs_out_1@blacksheep.org X-SA-Exim-Scanned: No; SAEximRunCond expanded to false --94eb2c197a2247e8af056ac6063b Content-Type: text/plain; charset="UTF-8" Real RS232 are +Ve when asserted, -Ve when off. That is what it was designed for. If a TTL level converter were used, inversion would be necessary. Of course, with an optical input SSR, you'd do that just by connecting the input the other way round. Opto-isolators make things so simple Andy www.g4jnt.com On 26 April 2018 at 21:06, Nick wrote: > On 26/04/18 20:53, Andy Talbot wrote: > > Have you checked it with any of your other COM ports? > > Check DTR and RTS both toggle appropriately > > > > > > Andy > > www.g4jnt.com > > > > > > Just a WAG, but are real rs232 signals not inverted? > > Nick > M0HGU > > > -- > The trouble is that things *never* get better, they just stay the same, > only more so. > (Eric) > 21:05:01 up 28 days, 7:33, 16 users, load average: 1.02, 0.47, 0.39 > > --94eb2c197a2247e8af056ac6063b Content-Type: text/html; charset="UTF-8" Content-Transfer-Encoding: quoted-printable
Real RS232 are +Ve when asserted, -Ve when off.=C2=A0 =C2= =A0That is what it was designed for.

If a TTL level conv= erter were used, inversion would be necessary.=C2=A0 Of course, with an opt= ical input SSR, you'd do that just by connecting the input the other wa= y round.=C2=A0
Opto-isolators make things so simple

=
Andy

<= /div>

On 26 April 2018 at 21:06, Nick <M0HGU@dc= tower.co.uk> wrote:
O= n 26/04/18 20:53, Andy Talbot wrote:
> Have you checked it with any of your other COM ports?
> Check DTR and RTS both toggle appropriately
>
>
> Andy
> = www.g4jnt.com
>
>

Just a WAG, but are real rs232 signals not inverted?

Nick
M0HGU


--
The trouble is that things *never* get better, they just stay the same,
only more so.
(Eric)
21:05:01 up 28 days, 7:33, 16 users, load average: 1.02, 0.47, 0.39


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