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3. Technical specifications
MICRO-EH
10/14/23,28
Speed of
Binary
0.9µs
command
Memory size
3 kstep
I/O points
10/70/84
Exp. unit
Up to 4
Commands
PID
ü
Clock
Port 1
RS-422/485 *
Port 2
Memory
(planned)
board
ü
Modem
R
WR
M, WM
L, WL
Special R
Special WR
Timer (TD)/
256 points
counter (CU)
(TD + CU)
0.01s : 64 pts.
points
TD /CU
setting value
Edge detect
*1 : Only 23, 28 points module.
*2 : (TD) is up to 256 (TD0 - 255), and counter (CU) is up to 511 (CU0 - 511) for EH-150 series. TD number
is not allowed to use same as CU number, and vice versa.
Special internal registers R, WR
The special internal registers are some flags, diagnostic information and parameter setting area to operate
the PLC easily and flexibly. The following list is a part of this area and error code in WRF000.
Address
Description
R7E3
ON while the first scan
R7E4
Always ON
R7E5
0.02s clock (0.01s ON, 0.01s OFF)
R7E6
0.1s clock (0.05s ON, 0.05s OFF)
R7E7
1s clock (0.5s ON, 0.5s OFF)
R7EC
Clear error code
WRF000
Error code (See right table.)
WRF00B – 00F
Calendar
WRF010 – 012
Scan time (max. / current / min.)
WRF01B – 01F
Calendar to read/write
WRF050
ROM version
WRF051
FLASH ROM version
CPU104
General specification
4 kstep
512
-
-
-
*
1
RS-232C
1
-
4,096 word
(WR0 – FFF)
16,384 points = 1,024 w. (M0 – 3FFF = WM0 – 3FF)
-
(L0 – 3FFF = WM0 – 3FF, L10000 – 13FFF = WL1000 – 13FF
(TD : up to 256 points, 0.01s base TD : up to 64 points.)
TD : 65,535 with 0.01, 0.1 or 1 sec. time base
512 points (DIF0 - 511) / 512 points (DFN0 - 511)
EH-150
CPU208
CPU308
1.0µs
8 kstep
8 kstep
98
RS-232C
-
Internal memory
1984 bits (R0 – R7BF)
8,192 w.
17,408 w.
(WR0 – 1FFF)
(WR0 – 43FF)
16,384 points ×2 = 1,024 w. ×2
64 points (R7C0 – 7FF
512 words (WRF000 – F1FF)
512 points (TD + CU) *2
CU : 65,535 times
Set by
Reset by
CPU
CPU
CPU
CPU
CPU
CPU
CPU
CPU
CPU
CPU
user
CPU
CPU
user
CPU
-
CPU
CPU
user
user
CPU
CPU
CPU
CPU
10
CPU316
CPU448
16 kstep
1,024
1
ü
ü
RS-232C/422/485
ü (optional)
ü
22,528 w.
(WR0 – 57FF)
(WR0 – C3FF)
(see below)
(see below)
Error code in WRF000
H13
micro processor error
H33
memory size error
H34
program (syntax) error
H41
I/O configuration error
scan time error
H44
(normal scan)
scan time error
H45
(periodic scan)
H71
Battery low
0.1µs
48 kstep
152
50,176 w.
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