Chapter 2 Specifications
2 – 6
2.3.2 Performance specifications
Table 2.4 Performance specifications
Specification Item
EHV-CPU1006 EHV-CPU1025 EHV-CPU1051 EHV-CPU1102
User program memory 64KB 256KB 512KB 1024KB
Source file memory 2MB 6MB
Data memory (non retain) 256KB
Data memory (retain) 16KB (incl. 4KB persistent variables)
Field bus memory 16KB (2KB/slot × 8)
No. of expansion bases 0 5
No. of I/O (using 64 points module) 704 4,224
Programming language IEC61131-3 compliant 5 languages
LD : Ladder Diagram
FBD : Function Block Diagram (incl. CFC : Continuous Function Chart)
SFC : Sequential Flow Chart
IL : Instruction List
ST : Structured Text
I/O updating cycle Refresh processing
Communication Protocol CoDeSys V3 protocol
USB USB 2.0 Full speed (Gateway *)
Ethernet 10BASE-T / 100BASE-TX (Gateway *, Modbus-TCP client/server **)
Serial RS-232C/422/485 (Gateway *, Modbus-RTU master **, General purpose)
Switch, Indications RUN LED, ERR LED, 7-segment LED (2 digit)
Indications RUN switch STOP / RUN (Remote STOP/RUN enabled when the switch position is RUN.)
E.CLR button Reset error information
Calendar / Clock Support (Built-in RTC)
Battery LIBAT-H (for retentive data and Real time clock)
Maintenance function Diagnosis (micro processor error, watch dog timer error, memory error, battery error, etc.)
* Gateway : Communication with EHV-CoDeSys
** If Modbus-RTU or Modbus-TCP function is needed, be sure to use EHV-CPU1025 or higher model because Modbus libraries
require about 100KB of user program memory.
Table 2.5 Processing speed
Data type (number of bit) Command
Processing time
[μs / IL]
BOOL (1) OR 0.08
BOOL (1) AND 0.08
SINT (8) ADD 0.07
SINT (8) MUL 0.08
WORD (16) ADD 0.08
WORD (16) MUL 0.1
DWORD (32) ADD 0.1
DWORD (32) MUL 0.1
REAL (32) ADD 0.9
REAL (32) MUL 0.9
LREAL (64) ADD 2.2
LREAL (64) MUL 2.2
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