Tcp-232

I am trying to set up a USR-TCP232-200 Ethernet Converter
I downloaded the software an look like I am able to configure the IP
My question is in a 1766 (1400) channel 0 or 2 DF1 full duplex
My converter is asking for Baud- Parity,Data & Stop Bit (1 or 2)
In rs logix I can set Baud and Parity But don't see Data and Stop Bit
I have handshake & error detection
Any thoughts, Anybody set one of these up before they are cheap and a friend gave me one to play with(like giving someone a rubic's cube)

In general the MicroLogix controller default is 8 data bits, no Parity bit, and 1 stop bit.

The MicroLogix does let you adjust for Even or No Parity, or for 1, 1.5, or 2 Stop bits. But it's always 8 data bits, and "8/None/1" is by far the most common serial framing for any serial port device, A-B or otherwise.

Thank you
is RS485 and DH485 COMPATABLE

I am testing with a 1400 I thought the DB9 Connection is channel 2 since I know channel 1 is ethernet and channel 0 has data sent /received I am online with linx. Nothing happening on channel 2
My converter seems to be active on the ethernet side I see thr lights flickering and I can ping it ok.
I am trying to figure if I have a setting wrong in the setup software or weather or not this module is even compatible.

You're correct on the Channel numbering on the MicroLogix 1400 controller:

Channel 0 is the 8-pin round serial connector
Channel 1 is the Ethernet port
Channel 2 is the DB9 serial connector

I'll try to explain it simply: Data Highway 485 is an A-B proprietary protocol that can run on two different kinds of physical wiring. One is a 3-wire isolated multipoint RS-485 network, and the other is ordinary RS-232 point-to-point connections.

DH-485, no matter what physical wiring it runs on, has very tight timing requirements and it is very uncommon to run it over any sort of general-purpose signal converter. WiFi, USB, Ethernet... unless they're purpose-built to do DH-485 (like the 1747-UIC) then they won't work with DH-485 protocol.

For connection to this Ethernet converter, you want to use DF1 Full Duplex over RS-232. That protocol is far more tolerant of timing and buffering and delays.

A general-purpose RS-232 to Ethernet device like this works by implementing a 'virtual serial port' over a TCP/IP network.

To your client software, the device looks like "COM12". But their software utility intercepts operating system calls to COM12, and transports them over TCP/IP to the device, which implements them on the device's serial port.


General purpose devices like this do not convert between the A-B Ethernet protocols and DF1 like the 1761-NET-ENI does.

You will use the Serial drivers in RSLinx Classic to communicate via this device, not the Ethernet drivers.

Thanks again for the info. I also believe I need the crossover cable I am using a straight through. I don't have a gender bender here for the 1747cp3

I read that device's user manual. It should come with a couple of aspirin.

I can't tell from that manual which type of RS-232 port it has, DCE or DTE. My guess is that it's a "DCE" type, so you would use a straight-through serial cable to connect it to the DTE type port on the MicroLogix or on a typical computer.

I think I'll give up on this for now and try and figure out my Digi One unit. Thanks

hows the weather in Seattle, I'm originally from Whidbey Island

Ken Roach said:

I read that device's user manual. It should come with a couple of aspirin.

I can't tell from that manual which type of RS-232 port it has, DCE or DTE. My guess is that it's a "DCE" type, so you would use a straight-through serial cable to connect it to the DTE type port on the MicroLogix or on a typical computer.

Click to expand...

Yeah, it is a DCE device.
And wow, that manual is a piece of work.