Fieldbus Sizes

Item	DeviceNet	Ethernet/IP and Ethernet/IP M40	Profinet I/O	Profibus DP-V1^a	CC Link	CC link IE
^a only for Profibus DP-V1:Transfer speed for acyclic data is ~1 kB/s, depending on how often you trigger tightenings this will be the bottleneck for how much acyclic data you can transfer. For example, if you perform a tightening every 3 seconds you should not try to transfer more than 3 kB/tightening
Max. cyclic data (Read + Write)	512	512	512	128(368)	N/A	512
Min. cyclic data (Read + Write)	0	0	0	1	N/A	0
Max. cyclic data (Write)	256	256	256	128(244)	N/A	256
Min. cyclic data (Write)	0	0	0	0	N/A	0
Max. cyclic data (Read)	256	256	256	128(244)	N/A	256
Min. cyclic data (Read)	0	0	0	0	N/A	0
Max. acyclic data (Read + Write)	65535	65535	65535	65535	N/A	65535
Min. acyclic data (Read + Write)	0	0	0	0	N/A	0
Max. acyclic data (Write)	65535	65535	65535	65535	N/A	65535
Min. acyclic data (Write)	0	0	0	0	N/A	0
Max. acyclic data (Read)	65535	65535	65535	65535	N/A	65535
Min. acyclic data (Read)	0	0	0	0	N/A	0

CC Link Version 1

Occupied stations	Bit points (bits)	Word points (words)	Total (Bit + Word, in bytes)
1	32	4	12
2	64	8	24
3	96	12	36
4	128	16	48