Difference between Delta PLC EH2 series and EH3 The capacity of the Ladder program is upgraded to 30k Steps, and the number of D devices is increased to 12000. · The capacity of the memory card has doubled. To prevent the wrong insertion, the new memory card and the old one are not interchangeable · Some function cards of DVP-EH2 PLC can not be used in DVP-EH3. The function cards which can be used are all communication cards, 02AD card and 02DA card. · When the position of the basic instruction is below 16k Step, the execution speed does not make any change. · When its position is above 16k Step, the execution speed becomes 2.8μs. · The execution speed of MOV instruction is improved to 4.8μs, and that of other application instructions is also im...