5/28/2007 1:33 AM | |
Posts: 264 Rating: (59) |
Hello solver, That´s an interesting question. Here my considerations: According to the technical Specification in the catalog the maximum is 78. MALL But there´s nothing to find abot that in the S7-200 manual. There, the number of modules is limited to 2, and the power input of 5V and 24V has to be recalculated. A CPU222 offers 340mA at 5V and 180mA at 24VDC. Like you can see here an EM223 with 32DE/32DO needs 240 mA at 5V DC. So in my opinion you can´t use 2 of them with a CPU222 What do the other´s think about that?? best regards... |
5/30/2007 2:23 PM | |
Posts: 2930 Rating: (432) |
Hi, noe is right. You have to claculate the 5V DC supply for EM's. A PLC222 can spend 340mA for the EM's. If you connect a EM223 it depends on what kind of EM223 (32/32) you need. Here some details: The DC/DC/DC Verison needs 240ma, the DC/DC/Rel. verison need 205mA. If you connect one to a PLC222 then you 100mA or 135mA left for an additional EM. In any case it is to less for a second EM232 (32/32). The next possible EM223 is a 8 In, 8 Out. I hope this helps. Regards Helmut AttachmentEM223 32 pt PI.pdf (243 Downloads) |
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