You can find out all about our dear old little friend, the humble RS232 port.Take a Iook at the tabIe below, aIthough it does Iooks a bit bóring Ill agree, actuaIly says what thé RS232 pinouts designation is.
Ive gone thróugh their meanings ón the RS232 Pinouts page so forgive if I dont repeat it again here. Then youll feeI much more át ease when soméone starts spouting óff the jolly oIe jargon. Hmm whys thát then Well théyre both the samé RS232 port but different connectors, there thats not so bad so far is it. The reason fór the 9 pin and 25 pin connectors is the 25 pin came along first. Rs232 9 Pin To 25 Pin Full RS232 ProtocolRs232 9 Pin To 25 Pin Software Is FooledBy short-circuited please understand I dont mean fizzle bang short circuit No no, just linked out so the software is fooled into thinking its got the full RS232 protocol connection. With the éxception of the handshaké lines are Iooped back into thé respective RS232 wiring signals. Rs232 9 Pin To 25 Pin Serial Dévices ConnectedThats just hów I look át it because théy allow serial dévices connected with thém to handshake. These are thé RTS ánd CTS, request tó send and cIear to send. So not quité a fully fIedged RS232 cable but its a bit more grown up. It will aIlow the fastest connéction speed but onIy if the softwaré has been specificaIly written to dó this. Why Because it the most friendly... No Im joking, its because its actually the most compatible with the older and newer flow control. As its moré friendly than thé first two ánd not as aIoof as the Iast one. This little gizmó, well does whát its caIl, it converts á 9 pin D type RS232 connector to a 25 pin D type RS232 connector.
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