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How to know the size of MC shall be used for S7-400 CPUs?

Created by: moeadi at: 11/15/2018 10:58 PM (1 Replies)

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11/15/2018 10:58 PM	Rate (0)
moeadi Regular Member Joined: 12/10/2015 Last visit: 9/30/2024 Posts: 6 Rating: (0)	Dear Experts, After finishing the PLC program, I got in the user program memory as attached in the picture. How can I know the size of the MC I shall use with S7-400 (6ES7 412-5HK06-0AB0)? Is it 1MB enough or I shall use 2MB? Regards, ------------------------------------------------------------------------------------------ Split from S7 400 Memory card. Attachment User Program Memory.png (315 Downloads)
	Last edited by: Jen_Moderator at: 11/16/2018 9:59:23 AM New subject after splitting Last edited by: moeadi at: 11/17/2018 5:13:57 PM Last edited by: moeadi at: 11/17/2018 5:19:51 PM
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11/19/2018 11:23 AM	Rate (0)
H-H Platinum Member Joined: 7/2/2008 Last visit: 9/30/2024 Posts: 928 Rating: (309)	Hello Moeadi, You should be more concerned with CPU memory limits rather than doubting the MC size. The MC is your load memory and you have a requirement of 867 KB on load memory. 1MB is OK. However, The 412-5 CPU has 512KB for program and 512KB for data. It seems your code is already exceeding the 512KB limit for program. I'm not aware of how the work memory is organized inside the CPU but I'm afraid this CPU might not work in this case. Regards, H-H

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