We are installing a system which includes 3 RP6s in the same location because we need 6 RS232 and 8 routable IR ports. We are trying to use only 1 RM433 since the 3 processors are next to each other. We connected the system exactley as described in the RTI Tech bulletin "Using Multiple RTI Control Processors -RP1/RP6", page 2 - Scenario 1: Control processors located in close proximity.

Basically what we did is wired the RM433 to the first PR6 using 12v, ground and signal and used only the ground and signal wires to connect the first RP6 to the second and the second to the third. The system though does not work in this configuration and although the RM433 responds (LED blinks) to the RF signal form the remote, it does not send anything to the processors (the green LEDs do not respond) . Even more this configuration destroys the RM433s (we tried two) because when we tried to connect them back to a single processor the problem was still there.

We are going to use 3 RM433 (one for each processor) to solve the problem but it should be possible to use only one..

any thoughts?

Maybe Im missing something here but you connected RP-1's and RP-6's together and a Rm-433??

Assuming you are using RP6 units and NOT RP-1s, the way you described it works for me every time.

I think he means "the first RP6 to the second and the second to the third."

I have done a similar scenario with 4 RM433s and 6 RP6s, and it worked perfectly. I can't help think that somewhere the wires are crossed from the RM433 to the RP6, or between RP6s. Because your description of the wiring is correct.

Just to recap: the 12v, ground and signal from the RM433 connect to the 12v, ground and signal "IN" of the first RP6. Then a ground and signal "IN" is paralleled from the first RP6 to the second RP6, and the same from the second to the third.

Are the signal and ground wires twisted together at the the first and second RP6s, or are they paralleled with connecting blocks or terminal strips?

Do all the connections make good contact with terminals at each device?

Sorry, the processors are all RP6s. I have just edited my first post for no more confusion

Exactly like that.


Twisted together at the first and second RP6.

I dont know what went wrong. This is quite simple. Is it possible to destroy an RM433?

The RM433s that I think I destroyed, seem to respond to the RF commands but do not make anything happen on the processor. We tried them on a single processor systems and still they do nothing.

Are you sure your programming is correct?

I have made the mistake of running system macros on the wrong processor before, or check the defalt output of the remote you are using.

I think estech is on the right track - the first place I would check is your terminal connections - the wires may be in the block tightly, but the clamp COULD be on the insulation resulting in intermittant operation or no operation. This has bitten me while troubleshooting industrial machinary...

Also, create a dummy project with just a couple of commands and only one rp6 and remote. That will allow you to quickly determine if the rm433 is at fault (rather than combing through your master program).

I had use one single RM-433 in the past to feed more than one RP6 and found some issues when you have more than one remote sending trigger codes at the same time.