Performance Specifications; Calculation Specifications - Hitachi HIDIC MICRO-EH Applications Manual

3.3

Performance Specifications

3.3.1

Calculation Specifications

The calculation specifications of the PLC are described below.
Model Name
Type
Control CPU
specifications
Processing system
Processing
speed
User program memory
Operation Instruction
processing language
specifications
Ladder
I/O External
processing I/O
specifications
Internal
output
Timer
counter
Edge detection
Peripheral Program system
equipment
Peripheral unit
Maintenance Self-diagnosis
functions
*1: The same numbers cannot be used with the timer counter.
*2: Only timers numbered 0 to 63 can use 0.01 s for their timer base.
Basic instructions
Application instructions
Basic instructions
Arithmetic instructions
Application instructions
Basic instructions
Arithmetic instructions
Application instructions
I/O processing system
Maximum number of
points
Bit
Word
Special Bit
Word
Bit/word shared
Number of points
Timer set value
Counter set value
Instruction language programmer and form graphic display programmer cannot
PLC error (LED display): Microcomputer error, watchdog timer error, memory
error, program error, system ROM/RAM error, scan time monitoring, battery
voltage low detection, etc.
Chapter 3 Function and Performance Specifications
10-point type 14-point type
EH-D10DT EH-D14DT
EH-D10DTP EH-D14DTP
EH-D10DR EH-A14DR
EH-D14DR
EH-A14AS
32-bit RISC processor
Stored program cyclic system
Several 10 µs / instruction
3 k steps max. (FLASH memory)
39 types such as LD, LDI, AND, ANI, OR, ORI, ANB, ORB, OUT, MPS,
62 types (arithmetic, application, control, FUN command etc.)
62 types (arithmetic, application, control, FUN command etc.)
Refresh processing
10 points 126 points
1,984 points (R0 to R7BF)
4,096 words (WR0 to WRFFF)
64 points (R7C0 to R7FF)
512 words (WRF000 to WRF1FF)
16,384 points, 1,024 words (M0 to M3FFF, WM0 to WM3FF)
256 points (TD + CU) *1
0 to 65,535, timer base 0.01 s, 0.1 s, 1 s (0.01s has maximum 64 points *2)
512 points (DIF0 to DIF511: Decimal)
+ 512 points (DFN0 to DFN511: Decimal)
Instruction language, ladder diagram
Programming software
(LADDER EDITOR DOS version/Windows® version, Pro-H)
3-6
23/28-point type
EH-A23DRP
EH-A23DRT
EH-D23DRP
0.9 µs / instruction
MRD, MPP, etc.
39 types, such as
135 points
1 to 65,535 times
be used.
EH-D28DT
EH-D28DTP
EH-A28DRP
EH-A28DRT
EH-A28DR
EH-D28DRP
EH-D28DRT
EH-D28DR
EH-A28AS
140 points