Is it possible to connect parallel port RS-232 (RS-485)?

Good day!
Asking for Your help in this matter.
Details, it looks like this: There is an auto scale on the block only one connector RS-232\ RS-485. The unit is already connected to the computer to record measurements. Consequently, no more can not access the port because the port is busy. But you must connect one computer with another ON to the scales.
Scale of NAIS. Protocol probably closed, because the "terminal" numeric values are not visible.
Can you recommend something.
August 19th 19 at 23:34
3 answers
August 19th 19 at 23:36
Solution
if you use the mudbus(RS-485) you can connect the computer for data collection.
in the case of RS-232 if not claimed capabilities then probably not, BUT there is a way you can use type converters moxa NPort 5110(I like them but are expensive) or the cheap option:
1) iRZ TE10 (RS232/Ethernet)
2) the ATC-1000
3) iRZ Switch RS232(Cable interfaces)
that Modbus can use rs-485 as the physical layer does not make these words synonymous. Modbus nothing to do with it, but otherwise I agree. - Earlene_Stehr34 commented on August 19th 19 at 23:39
the standard for written 485 - up to 32 units of load can be hung. but then we must think - if the Protocol is point to point and bilateral, in parallel it is possible to hang only one side(e.g., the transfer of the balance), otherwise they will interfere. - Earlene_Stehr34 commented on August 19th 19 at 23:42
The master of the network (a device that interrogates) to the RS-485 network (most likely the Protocol Mоdbus, or similar) can only be one, respectively - when the two computers (both of which will be master)- survey may not need to be. Solution any Converter with an integrated server (the same of Moss), or - on one of the computers (General) to lift the OPC server (which still need to learn how to communicate with misumi), and from the second - to connect to LFS on LAN, for example. With RS-232 is not all that simple - though the Protocol allows multiple connections to the same line, in practice, the survey could again be only one device. - Ashtyn commented on August 19th 19 at 23:45
: I have worked for a long time 2 servers poll like there was no particular problem but may be it is a feature of the meter - Clementine.Mil commented on August 19th 19 at 23:48
: A link to the Studio - Clementine.Mil commented on August 19th 19 at 23:51
Thank you all for an interesting discussion!
: Here is the splitter interfaces, straight to the point... but I read, it switches to the time between outputs. I'm afraid that this may be a problem when the ligaments Libra-comp. I spoke with an engineer from naisa, on the subject of connecting an additional display to display the weight. So, the scoreboard is connected in parallel to an existing connection(this will podpisatsja on the connector). Have You met splitters similar to the iRZ RS232 Switch, without the switch? Or just podaetsya on the ground and TX and see the terminal? - Landen_Leffl commented on August 19th 19 at 23:54
: All versions I have seen are based on switching. probably the easiest way is using a Converter. Have you tried to contact the manufacturer? I think he will be able to offer solutions. - Clementine.Mil commented on August 19th 19 at 23:57
: A Converter is it possible to raspredelit port? In principle, the task is seemingly simple. Share readings with weights on another computer. Ie I want to stand in the gap between the scales and computer, and to watch \ read data from a scale. The existing link to break is not desirable, because they need every day. To buy on Craigslist the same is not so simple... because they are not. Before the producer does not want to Shine the idea, but judging by the fact that the weights for the right driver, then they will have to contact. - Landen_Leffl commented on August 20th 19 at 00:00
: Tell me, what kind of controller with built-in server Moss? I would really appreciate model \ link. - Landen_Leffl commented on August 20th 19 at 00:03
Brad - just about to "tear the cable"... That will get the slave Modbus if two masters simultaneously turn to one and the same register? In the best case, toss the packet as erroneous and at worst will hang the entire network. If you could just "tear the cable"- USB would be the simple "tees" type electric "pilot"... Alas, it doesn't work. Look in any multi-port hub - there are bound to have at least one chip. - Ashtyn commented on August 20th 19 at 00:06
: www.moxa.ru/shop/com_v_ethernet/standart/5000/5400... - Ashtyn commented on August 20th 19 at 00:09
: Thanks for the link, I looked, but it's kind of Converter interfaces. The clone feature I have not found. Or not understood. You should "clone" the output port with the weights. Although only a transmission from them, because the idea is there is a weight and a sign of stability weight. - Landen_Leffl commented on August 20th 19 at 00:12
: As I understand it - the Protocol scales with its own kind (from the manufacturer), ie will have to work b/W them driver. And from the description of the driver, it follows that the terminal(scale) give information on request of the computer - it turns out that just "sit parallel" a line can fail. However, the driver is a TCP/IP server through which to send data to another computer on the local network. The documentation for the driver, there are examples of work. There are, however, some knowledge of programming is required but not too difficult. Maybe this option will suit You? In an extreme case - please support the producer...
Regarding the mentioned Converter - Yes, it is a interface Converter, from the viewpoint of the PC (after running the driver this Converter and connect via Ethernet) - this is one (or more) com-port, then working with him as c usual. Access from multiple computers it allows (not in all models, it is necessary to specify). And I don't know if it will work with non-standard Protocol. - Ashtyn commented on August 20th 19 at 00:15
: Thank You, the idea caught. For the implementation of the same all cleared up. You need to try. Now at least clear how.
PS. Please write a separate response, I will mention it. - Landen_Leffl commented on August 20th 19 at 00:18
August 19th 19 at 23:38
Solution
As I understand it - the Protocol scales with its own kind (from the manufacturer), ie will have to work b/W them driver. And from the description of the driver, it follows that the terminal(scale) give information on request of the computer - it turns out that just "sit parallel" a line can fail. However, the driver is a TCP/IP server through which to send data to another computer on the local network. The documentation for the driver, there are examples of work. There are, however, some knowledge of programming is required but not too difficult. Maybe this option will suit You? In an extreme case - please support the producer...
Regarding the mentioned Converter - Yes, it is a interface Converter, from the viewpoint of the PC (after running the driver this Converter and connect via Ethernet) - this is one (or more) com-port, then working with him as c usual. Access from multiple computers it allows (not in all models, it is necessary to specify). And I don't know if it will work with non-standard Protocol.
August 19th 19 at 23:40
Here found still here such piece:
849f6e2fd2824835b38d18bb8e4a72f8.jpgthen there's a whole bunch of stuff

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In principle the same topic...

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