Glossary
iv
Term
Description
Normal packet and
large packet
The packet whose size is within 510 bytes is called normal packet. The packet whose
size is 511 bytes to 1444 bytes is called larget packet.
The maximum communication performance varies according to the data size used for
communication.
Performance index of FP0H
For 510 bytes or less: Max. 5000 pps
For 511 bytes or more: Max. 2500 pps
Protocol used for
cyclic communication
The cyclic communication is performed using UDP. The used port number is 2222.
Heartbeat
For "Input Only" or "Listen Only", a packet called heartbeat whose data size is zero is
sent from the originator (FP0H). For the RPI of the heartbeat, the value 16 times of the
RPI of transmitted data from a target is automatically applied.
The heartbeat is used for confirming the continuation of the connection on the target
side. It is used for detect the timeout.
Forward open
This is a command for opening the connection of EtherNet/IP and sent using TCP. The
used port number is 44818.
Large forward open
This is a command for opening the connection when sending/receiving data whose
size is larger than 511 bytes.
RUN/IDLE bit
Operation state flag (RUN/IDLE) sent by connected devices in cyclic communication.
RUN
:
1
IDLE
:
0
When the RUN/IDLE bit of the originator does not change to RUN, the target may not
operate properly. For details, refer to "5.2.3 RUN/IDLE Bit".
•
Do not use "2222" and "44818" for the port numbers set to the connections
of Ethernet communication.
Содержание AFP0HC32ET
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Страница 11: ...1 FP0H EtherNet IP Function ...
Страница 18: ...FP0H EtherNet IP Function 1 8 ...
Страница 19: ...2 Cyclic Communication ...
Страница 27: ...3 Setting Procedure ...
Страница 50: ...Setting Procedure 3 24 ...
Страница 51: ...4 Tool Operation ...
Страница 69: ...5 Startup and Operation ...
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Страница 79: ...6 Instruction References ...
Страница 88: ...Instruction References 6 10 ...
Страница 89: ...7 Reference Information ...
Страница 97: ...8 Appendix ...
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