Siemens S5 CPU944 AND CP524

shaulapto · Sep 21, 2006

Hi,

I have a Siemens S5 PLC with a CPU944(6ES5 944-7UA22) and a
CP524(6ES5 524-OAA41).
The CPU944 module without EPROM and the CP524 module with EPROM(6ES5 373-OAA41).
Could somebody explain me how this two modules work together?

Thanks,

Shaul

PeterW · Sep 21, 2006

The CPU is the PLC brain, this is where the program is stored and executed. The CP524 is a serial communication card to interconnect the CPU to another device or printer.

shaulapto · Sep 21, 2006

Thank you for your reply.So the EPROM in the CP524 contains only a communication program and the main program is stored in the CPU944 RAM?
I am abble to access the CPU program with a programming tool like Step5.
How can I access the communication program stored in the EPROM?

PeterW · Sep 21, 2006

com535 siemens package

SimonGoldsworthy · Sep 21, 2006

I think the CP524 EPROM only contains parameters (Baud rate, parity, protocol type etc.)

PeterW · Sep 22, 2006

It can contain protocols for specific serial interfaces, we had some specials made for certain equipment many years ago.

shaulapto · Sep 22, 2006

The CP524 has a D type 25 female connector.Is this connector also used to download the program using the com535 software package you mentioned?
Do I need also a special programming communication cable?
Where can I find more information and documentation about CP524 and com535?

PeterW · Sep 22, 2006

http://support.automation.siemens.com/US/llisapi.dll?query=cp524&func=cslib.cssearch&content=skm%2Fmain.asp&lang=en&siteid=cseus&objaction=cssearch&searchinprim=0&nodeid0=10805186&x=33&y=2

5th and 6th entries down are the manual for the CP524/525

and sorry its COM525 not COM535, the latter is the ethernet package for H1 comms.

note: the protocols were not programmed in by this software, the protocols were held on eeproms purchased from Siemens.

shaulapto · Sep 22, 2006

Ok,thank you for your explanation

Siemens S5 CPU944 AND CP524

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