5/9/2019 2:10 PM | |
Joined: 4/17/2018 Last visit: 7/14/2024 Posts: 262 Rating: (60) |
Hello, SW: Step 7 v5.5 sp4 Hw: s7-300 cpu 318-2dp I maked modification in fc66 but when I tried to download this Fc I get error saying that insufficient memory space on the module as you see in first picture in attachment. the second picture describe memory status (89% in RAM memory). So I'm trying to copy RAM to ROM but I'm getting error saying that's not supported by the module (see third picture in attachment). Can you give me solution to avoid this problem until migrating this cpu to 317-2dp. thanks in advance. Attachmenterrors_list.pdf (134 Downloads) |
5/9/2019 2:51 PM | |
Joined: 9/27/2006 Last visit: 9/19/2024 Posts: 12282 Rating: (2684)
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Hello Med_selmi; Before attempting a migration of a CPU 318-2DP to a CPU 317-2DP, you should take these documents into account: the CPU 318-2DP is based on a S7-400 architecture (in a S7-300 format).Most of the functions and instructions are very similar, but the S7-400 uses 4 accumulators instead of the 2 provided to S7-300; so algorithms work differently on the 2 platforms. Some of the S7-318-2DP instructions just will not work with newer S7-300 CPUs. Also, the memory concept is different, there is no integrated RAM in the S7-300 (as there is in the S7-400 and the S7-318-2DP), on S7-317-2DP CPUs the load memory is uniquely based on the MMC (flash-EPROM). So please check this information out with the original S7-31802DP program(before modifications) What should you watch out for when migrating from the CPU 318-2 DP to the CPU 317-2 DP and CPU 317-2 PN/DP? https://support.industry.siemens.com/cs/us/en/view/18365209 CPU 318 Migration Check tool https://support.industry.siemens.com/cs/ww/en/view/22680601 I suggest you migrate the original program first, then prepare the FC modifications in the S7-317-2DP platform. Hope this helps, Daniel Chartier |
This contribution was helpful to1 thankful Users |
5/9/2019 3:31 PM | |
Joined: 4/17/2018 Last visit: 7/14/2024 Posts: 262 Rating: (60) |
Thank you very much for your support, I used cpu 318 migration tool before and there is no problem with cpu 317-2dp. |
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