How to set up TI 555-1106 as hot backup system?

Dear All,

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2. Where can I find information (such as DP connection method, configuration tools, and RPM card needed, etc.) about TI 555-1106 set up as hot backup system? I can only find information about 560T/565T.

3. If I need to change a TI 555-1106 hot backup system from RBC-485(505-6851) to RBC-DP(505-6870), what should I do?

Thank you for your help in advance

KK

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Split from Looking for COM PROFIBUS tool.

Hello kk.cheung;

The original TI505 (later Siemens 505) did not offer hot redundancy for the 545/555 CPUs. There were options for warm redundant remote rack controllers.

Since Siemens dropped production if the Siemens 505 series, CTI has taken over the "old" 505 PLCs and added their own 2500 series CPUs, compatible (to a point) with the original 505 system and hardware. Here is their redundancy offerings:

http://www.controltechnology.com/products/2500-Series-Classic/System-Redundancy-Options

If you need to further your examination of any of their products you should contact them directly, especially to determine if what they offer can be used with your existing system.

Hope this helps,

Daniel Chartier 

Thanks Eagle.

I have taken a look at the PRS manual.

It seems to me that the problem of restoring control from PLC_B to PLC_A after maintenance of PLC_A is not catered.

In normal situation, when PLC_A is dead PLC_B will take over the control via PRS but when PLC_A comes back after maintenance, how to synchronize states machine, timer, counter values inside PLC_A with those relavent values in PLC_B is not mentioned.

Best regards,

KK