How many types of rs-232 lead connections

wiseguy4u

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how many types of rs-232 lead connections. I mean they are change for every receiver or there are only two that is simple and cross. I mean connection diagrams.
 

BarMoo

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I believe you will find an inline and a null-modem variant for RS232 - perhaps even more depending on use.

Do a google search to learn more:)

Mark.
 

Qariya

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this is wiring connection

db9null.PNG
 

nissan

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Please help
How do you differntiate between RS232 crossAND RS232 straight?
 

john_graydon

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nissan said:
Please help
How do you differntiate between RS232 crossAND RS232 straight?

With the cross lead pins 2 & 3 are reversed at the other end. But dont take my word for it. i have an auful head.
 

PCD

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nissan said:
Please help
How do you differntiate between RS232 crossAND RS232 straight?

The straight is known as simply 'serial lead' and it has pin1 connected to pin 1 at the other ene, pin2 to pin2 etc. The crossed one (diagram above) is known as the 'null-modem' cable, sometimes referred to as null-modem serial which causes confusion. Other feature is the end connections of the null-modem are same gender (female-female usually) and the straight opposite gender. Regards, pcd.
 

nissan

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Thank you PCD very much, Can you tell me where can i get SERIAL LEAD (STRAIGHT) cause even pc world dont have it.
 

PCD

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nissan said:
Thank you PCD very much, Can you tell me where can i get SERIAL LEAD (STRAIGHT) cause even pc world dont have it.


Try sat dealer websites who sell phoenix programmers. I don't think I am allowed to advertise. Regards.
 

john22

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Hi, If you are still looking I bought one today in Maplins here in Dublin 8 Euros About 5 Pounds Sterling Hope this helps.
 
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