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98
Computing the Cycle Time
Section 2-7
Note
The I/O refresh time for CPU Unit built-in I/O is included in overhead processing.
CJ-series Special I/O Unit I/O Refresh Times (Examples)
Increase in Cycle Time Caused by CPU Bus Units
Note
The refresh time for I/O built into the CPU Unit is included in the overseeing
time.
When pulse output ports 2 and 3 are used, the cycle time increases in propor-
tion to the output frequency.
Cycle time rate of increase (%) from pulse output ports 2 and 3 = Output fre-
quency (kHz)
×
0.1.
Examples:
30 kHz: Approx. 3%
100 kHz: Approx. 10%
Temperature Sensor Units
CP1W-TS001
0.25 ms
CP1W-TS002
0.52 ms
CP1W-TS003
0.67 ms
CP1W-TS004
0.47 ms
CP1W-TS101
0.25 ms
CP1W-TS102
0.52 ms
CompoBus/S I/O Link Unit
CP1W-SRT21
0.21 ms
Name
Model
I/O refresh time per Unit
CompoBus/S Mas-
ter Unit
CJ1W-SRM21
Allocated one unit number
0.15 ms
Allocates two unit numbers
0.17 ms
Analog Input Unit
CJ1W-AD041/081(-V1)
0.16 ms
Analog Output Unit CJ1W-DA021/041/08V
0.16 ms
Analog I/O Unit
CJ1W-MAD42
0.167 ms
Temperature Con-
troller Unit
CJ1W-TC
0.367 ms
Name
Model
Time
Remarks
Controller Link
Unit
CJ1W-CLK21-V1 0.15 ms
There will be an increase of 1.0 ms + 0.7
µ
s
×
number of
data link words.
There will be an additional increase of the event execution
times when message services are used.
Serial Commu-
nications Unit
CJ1W-SCU41
CJ1W-SCU21
0.24 ms
There will be an increase of up to the following time when a
protocol macro is executed:
0.7
µ
s
×
maximum number of data words sent or received (0
to 500 words)
There will be an increase of the event execution times when
Host Links or 1:N NT Links are used.
Ethernet Unit
CJ1W-ETN11/21 0.17 ms
If socket services are executed with software switches,
there will be an increase of 1.4
µ
s
×
the number of bytes
sent/received.
There will be an increase of the event execution times when
FINS communications services, socket services for CMND
instructions, or FTP services are performed.
DeviceNet Unit CJ1W-DRM21
0.5 ms + 0.7
µ
s
×
Num-
ber of allocated words
The number of allocated words includes all I/O areas allo-
cated to all slaves, even unused words within the I/O areas.
If message communications are performed, the number of
words for message communications must be added to the
number of allocated words at the left, but only during the
cycles when the message communications are performed.
Name
Model
I/O refresh time per Unit
Summary of Contents for Sysmac CP1H
Page 2: ......
Page 3: ...CP1H X40D CP1H XA40D CP1H Y20DT D CP1H CPU Unit Operation Manual Revised October 2014...
Page 4: ...iv...
Page 10: ...x...
Page 18: ...xviii...
Page 22: ...xxii...
Page 34: ...xxxiv Conformance to EC Directives 6...
Page 76: ...42 Function Blocks Section 1 5...
Page 176: ...142 CP series Expansion I O Unit Wiring Section 3 6...
Page 372: ...338 Analog I O XA CPU Units Section 5 5...
Page 578: ...544 Trouble Shooting Section 8 7...
Page 622: ...588 Sample Application Section 9 12 Network Settings Network Tab Network Settings Driver Tab...
Page 668: ...634 Standard Models Appendix A...
Page 744: ...710 Auxiliary Area Allocations by Address Appendix D...
Page 771: ...737 Connections to Serial Communications Option Boards Appendix F Connecting to Unit...
Page 772: ...738 Connections to Serial Communications Option Boards Appendix F...
Page 800: ...766 Specifications for External Power Supply Expansion Appendix H...
Page 806: ...772 Index W Work Area 165 work bits 165 work words 165 write protection 379...
Page 808: ...774 Revision History...
Page 809: ......