Difference between Delta PLC EH2 series and EH3
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 improved
by 4~5 times.·
The high-speed input/output functions of
- The capacity of the Ladder program is upgraded to 30k
Steps, and the number of D devices is increased to 12000.
- The number of external input interruptions is 16.
- There are 3 sets of masking functions of the interruption.
- Newly added CSFO instruction has the speed-tracing function and can be used with the manual pulse generator.
- Newly added DVSPO and DICF instructions have various speed-changing functions. (Please refer to API 198 and API 199.)
- The zero return instruction (DZRN) has the function of detecting limit switches, stopping at the positive position, seeking Z phase, and outputting the displacement. (Please refer to API 156.)
- The direction outputs of DZRN instruction are used with Y1, Y3, Y5, and Y7. (Please refer to API 156.)
- That special M can set the start and reset functions of C235~C240 is cancelled. The bandwidth of C235~C240can be up to 10 KHz.