Difference between Delta PLC EH2 series and EH3

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 improved
by 4~5 times.
The high-speed input/output functions of

  1. The number of external input interruptions is 16.
  2.  There are 3 sets of masking functions of the interruption.
  3. Newly added CSFO instruction has the speed-tracing function and can be
    used with the manual pulse generator.  
  4. Newly added DVSPO and DICF instructions have various speed-changing
    functions. (Please refer to API 198 and API 199.)
  5. 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.)
  6. The direction outputs of DZRN instruction are used with Y1, Y3, Y5, and
    Y7. (Please refer to API 156.)
  7. 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.

Other new functions
of DVP-EH3 Series PLC

A.    COM1 card and COM3 card can be masters. COM3 is an independent
communication port which does not occupy COM2. The flag of the transmitting
function in the master is the same as that in DVP-ES2.
B.    The solar energy instructions DSPA and GPS instruction are added. (Please
refer to API 177 and API 178)
C.     We add the m servo convenience instruction ASDRW. (Please refer to API
D.    The program can be automatically backed up, and will not disappear even
if the battery has run down.
E.     The second-backup function can store the second program and data.
F.     We add the basic instructions which are used exclusively for words. For
example, BLD, BOUT, and etc.(Please refer to API 266~274)
G.    The comparison instruction of the floating point number (FLD>=….).is
added. (Please refer to API 275~292)
H.    M1356 can be used in PLC-LINK to designate the station numbers. Only when
M1353 is on can D1900~D1931 be used.
I.       ISPSoft and WPLSoft can set the read-only function of the communication
and function of downloading the program.

J.       It can connect with at most 12 right-side analog extension modules.

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