Profibus System Integration PDF 4.03MB - Schneider Electric

• A cyclic data field (I/O data) which is proportional to the type and number of slaves;this field is divided into an input section (reading) and an output section (writing).• An exchange zone for the acyclic instructions to the slaves (mailbox). Themailbox zone is made up of 145 input words and 145 output words.• A status zone made up of 76 input words.Please note that calculation can change depending on master configuration(diagnostic data)MNET 5204 : 768 words IN / 768 words OUTNB Instruments permaster10 50 MAX 124I/O data size on ProfibusWords INWordsOUTWords INWordsOUTWords INWords OUT50 25 250 125 625 313Premium TSX ETY orM340 NOEI/O Scanner data size 2048 words IN / 2048 words OUTMax TSX ETY per PLC 4I/O scanner data size 50+145+76=25+145=250+145+76=125+145=625+145+76=313+145=271170471270846458Number of gatewaymasters per TSX ETYper PLC(Instruments x Master)Quantum 140 NOE2048 /271=7 2048 /471=4 2048/846=24x7x10=280 4x4x50=800 4x2x124=992I/O Scanner data size 4096 words IN / 4096 words OUTNb of 140 NOE per PLC 6I/O scanner data size 50+145+76=25+145=250+145+76=125+145=625+145+76=313+145=271170471270846458Number of gateway per140 NOEMaximum instrumentsper PLC(Instruments x Master)4096 / 271=15 4096 / 471=8 4096 / 846=46x15x10=900 6x8x50=2400 6x4x124=2976In conclusion, the number of Profibus couplers necessary to manage a specificapplication will differ depending on the type of architecture that is implemented.44