Fieldbus Sizes

Item	DeviceNet M30^a	DeviceNet M40^b	Ethernet/IP M30	Ethernet/IP M40	Profinet I/O M30	Profinet I/O M40^c	Profibus DP-V1 M30^d	Profibus DP-V1 M40	CC Link M30	CCLink M40	CCLink IE M40
^a Values in this column are only applicable for StepSync and Flex. ^b Values in this column are only applicable for Power Focus 8. ^c Values in parentheses are only applicable when PF6 FlexSystem is used with Profinet I/O M40. ^d Only for Profibus DP-V1: the transfer speed for acyclic data is ~1 kB/s, depending on how often you trigger tightenings. This is the bottleneck for how much acyclic data one can transfer. For example, if a tightening is performed every 3 seconds, you should not try to transfer more than 3 kB/tightening.
Max. cyclic data (Read + Write)	512	1024	512	512^/2896^*	512	(508)^*/2852	368	488	512	736	512^/2840^*
Min. cyclic data (Read + Write)	0	0	0	0	0	0	0	0	0	0	0
Max. cyclic data (Write)	256	512	256	256^/1448^*	256	(254)^/1426^*	244	244	256	368	256^/1420^*
Min. cyclic data (Write)	0	0	0	0	0	0	0	0	0	0	0
Max. cyclic data (Read)	256	512	256	256^/1448^*	256	(254)^/1426^*	244	244	256	368	256^/1420^*
Min. cyclic data (Read)	0	0	0	0	0	0	0	0	0	0	0
Max. acyclic data (Read + Write)	65535	65535	65535	65535	65535	65535	65535	65535	N/A	N/A	65535
Min. acyclic data (Read + Write)	0	0	0	0	0	0	0	0	N/A	N/A	65535
Max. acyclic data (Write)	65535	65535	65535	65535	65535	65535	65535	65535	N/A	N/A	65535
Min. acyclic data (Write)	0	0	0	0	0	0	0	0	N/A	N/A	0
Max. acyclic data (Read)	65535	65535	65535	65535	65535	65535	65535	65535	N/A	N/A	65535
Min. acyclic data (Read)	0	0	0	0	0	0	0	0	N/A	N/A	0

^* Max value for PF6 FlexSystem

^** Max value for PF8 StepSync

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

CC link version 2

Occupied stations	1 Extension cycle		2 Extension cycles		4 Extension cycles		8 Extension cycles
	Points	Total	Points	Total	Points	Total	Points	Points
1	32 bits	12 bytes	32 bits	20 bytes	64 bits	40 bytes	128 bits	80 bytes
	4 words		8 words		16 words		32 words
2	64 bits	24 bytes	96 bits	44 bytes	192 bits	88 bytes	384 bits	176 bytes
	8 words		16 words		32 words		64 words
3	96 bits	36 bytes	160 bits	68 bytes	320 bits	136 bytes	640 bits	272 bytes
	12 words		24 words		48 words		96 words
4	128 bits	48 bytes	224 bits	92 bytes	448 bits	184 bytes	896 bits	368 bytes
	16 words		32 words		64 words		128 words