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Table 4.3 Special internal outputs in CPU concerned with remote response time
Items
No.
WRF010
Scan time (maximum value)
Scan time
Scan time (present value)
WRF011
of CPU
WRF012
Scan time (minimum value)
WRF095
Remote refresh time (maximum value)
Remote
master
WRF096
Remote refresh time (minimum value)
No.1
WRF097
Remote refresh time (present value)
WRF0AD
Remote refresh time (maximum value)
Remote
master
WRF0AE
Remote refresh time (minimum value)
No.2
WRF0AF
Remote refresh time (present value)
WRF0C5
Remote refresh time (maximum value)
Remote
master
WRF0C6
Remote refresh time (minimum value)
No.3
WRF0C7
Remote refresh time (present value)
WRF0DD
Remote refresh time (maximum value)
Remote
master
WRF0DE
Remote refresh time (minimum value)
No.4
WRF0DF
Remote refresh time (present value)
(Note 1) Time base of scan time in EH-CPU104A, 208A, and 316A is 10ms.
(Note 2) The remote refresh times are not stored when "Word 4W/4W" ("X4Y4W" in the control editor) is set with the I/O
assignment of master module (EH-TRMME).
■ Example of calculation
Example of calculation for response time is as follows when scan time of CPU is 20ms, and HS is on in
system configuration below.
Master module
(EH-TRMME)
Occupied channels of master No.1
Channel
Input
Output
No.
0
X10000～
-
1
X10100～
-
2
-
Y10200～
3
-
Y11000～
4
-
Y11100～
5
X11200～
-
6
X11300～
-
7
-
Y11400～
According to equation (4.1), the response time is
Ta = 20 + 1.25*2 + 0.02*2 + 5 + 1 = about 28.5 [ms]
Name
Slave module
(EH-TRMLE)
X
X
16
16
1) From change of this input
Occupied channels of slave St.No.0
Channel
Input
Output
No.
0
X10000～
1
X10100～
2
-
Y10200～
I/O refresh time in slave module
Remote refresh time: 1.25ms = 0.156 ms * 8 channels ......from equation (4.2)
Scan time of CPU (in the case of 20ms)
Figure 4.41 Example of calculation for response time
4 – 29
Chapter 4
Basic functions and System configuration
Description
The maximum value, present
value, and minimum value of
execution time of normal scan are
stored in the unit of 1ms. (Note 1)
The maximum value, present
value, and minimum value of
remote refresh time of each
master station are stored in the
unit of 1ms. (Note2)
Y
16
-
Occupied channels of slave St. No.1
-
Channel
No.
3
4
5
X11200～
6
X11300～
7
Output response time of EH-YTP16
Input lag time of EH-XD16
Setting
Resetting
condition
condition
Set by
Cleared by
system
system
(when RUN
starts)
Cleared by
Set by
system
system
(when
power-up)
Slave module
(EH-TRMLE)
Y
Y
X
X
Y
16
16
16
16
16
2) Until change of this output
Input
Output
-
Y11000～
-
Y11100～
-
-
-
Y11400～
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