I want to map data between a Siemens S7 300 and an AB SLC500 series PLC. Anyone know how I can do this at minimum cost? Can't I use a Profibus card in each to tx the data and use code to map the data to the I/O?

 

Hello;

I know of 3 options for exchanging data between Siemens S7 and SLC500:

1) Profibus-DP, as you state in your question. SST (Woodhead) makes scanners for the SLC backplane, one master and slave (SST-PFB-SLC) and one onl;y slave (SST-PFB-SLC-ADP). Easy to configure, easy to program. On both sides (Profibus-DP is native to Siemens, a SLC as Profibus slave is simple top configure).

http://www.woodhead.com/products/automation/networkinterface/PLCBackplaneModules/#2113

2) A serial CP340/CP341 in the S7 can be configured to exchange over 3964R protocol; Prosoft makes a MVI46-3964R module for SLC PLCs. Slower exchange, in Siemens relatively easy to program (function blocks available), more complex in the SLC.

http://www.prosoft-technology.com/content/view/full/5946

3) Siemens offers a DF1 loadable driver for its CP341 serial processor; you can dowload it at Entry ID: 8715118 on Siemens' support website:
http://support.automation.siemens.c...hangelang=true&aktprim=0&siteid=cseus&lang=en

Hope this helps,
Daniel Chartier

 

Hi,

What size map? what update rate? If it is small and low, then it can be acheived at little or no cost with discrete IO.

Marc Sinclair

 

Use the KepwareEX OPC server with drivers for A-B and Siemens and use FactorySQL to do the mapping. You can map any amount of memory across.

We've used hardwire devices designed for the purpose before and it was too unreliable. The link simply couldn't be relied on.

 

Use MOD-BUS Comm. for the same.