i have a security camera im trying to control. its a pelco spectra mini and it uses rs422 for control of the pan/tilt/zoom functions. i can control it with pelco's "d" protocol which are rs232 cmd's(see attached). they would be the same commands i would use over 422 correct? not asking a vender specific question just if 422 and 232 can transmit the same commands/data. im pritty sure its a obvious yes but would like some second opinions
RS422 and RS232 are both physical layer protocols and quite different. But there are RS422/RS485 tranceiver chips that handle the physical layer. The rest should mostly be standard serial communication.
485 and 232 are physical specs and nothing to do with the data transmitted, so as long as you get the hardware sorted with compatible transceivers on each and then send away.
Rob
ok thanks guys. I understand the hardware side of it and understand the 422 is a differential signal and 232 isint, it was more the software side. but from my understanding the software serial protocol is the same for both.
Most often they are
yep, should be
Rob