Rodney

Baub  l have just noticed you have not used the inputs in the sequence as you did in your previous sequence. Rodney  

Regarding your sequence Q100.0 will you be using this as an indication that the sequence is running ie a run lamp. If not you can use a internal flag so as to not waste a actual output. Also you require a cancel flag for T1,T2,T3 and T4. The way it is programmed T1,T2,T3 and T4 once they energise they cannot turn off. Rodney  

That would depend on the valves operating the system. If the valves are single acting then when the valve would return when de-energised. However double acting would require a return signal. This would depend on which operation is required. Rodney

You have written the sequence of how you want the process to function. Now you should just put that sequence into your program. Have a go and we can give you helpful advice. Rodney

Have you tried to connect to the P.L.C with your software and cable.     Rodney

You do possibly have a lifeline that the program is stored on a eprom. If you remove the front cover the middle part on the front there maybe an eprom.  Good luck Rod Strick 

Switch the selector to run  

You have to change the mode to write mode.   Rodney  

You can even look on YouTube for some tutorials so simple.  

I agree Gambit 100%    

You would get a much better response if you posted in the Omron section.   Rodney

It’s CAB 5 that you require.

The software is Micro Win and the cable is a PPI cable Rodney

Then try your local Siemens distributor. They should be able to order it for you. Rodney

MDS Bateries online   Rodney  

Hi Possibly the relay for that output the contacts have welded together.   Rodney

You have to buy it from Omron.

As mentioned in my original post the DA001 was in fault and when I replaced the RM201 and the RT201 the DA001 went into run. Jay Do I toggle the restart bits you mentioned the address I am writing to in the program is 100 if that helps In the remote rack there the following l/O left to right input module address 60 output module address 61 output module address 62 empy slot DA001  

I was called to one of my customer this morning who has one of tha above PLC,s. The problem is that there is a remote rack and  it is not talking to the main rack and the PLC is not in run mode. There is also DA001 analog module in the remote rack which was in error. I exchanged both the RM201 and RT201 modules the comms is still not working but the analog module is now in run. Both the Rm201 and the R201 are in alarm. The alarm is described as a duplex bus or intelligent I/O unit. The cable between the two units buses out ok. any help on this would be appreciated    thanks  Rodney  

Just been to site and checked again using CX  Programmmer and I could see a code number. The error code number is 0x00D0. Rodney  

I have not seen an error code number only the description above. Any help in resolving this would be greatly appreciated. Rodney

Thanks for your posts. Jay The RT201 has only the power indicator light. The RM201 has flashing fault light has does the CPU. Rodney

Thanks  Jay but I have done a like for like replacement including the dip switch settings thanks Rodney      

As Kaare_t said you must remove the power and the battery to reset the PLC. If you try to download your program without a reset the PLC will request the password. Rodney

The software is G X Devloper and the cable is a SC09.   Rodney