Hitachi Hidic EH-150 Applications Manual page 60

Preliminary Rev.03
7.3.1 Optional sending
This function is valid only when cyclic sending mode, which is selected in Web page.
For further understanding the optional sending, the procedure of disabled optional sending is described at
first as below.
- Optional sending disable
Sending is controlled automatically. User program is not required.
(A) EH-ETH requests designated data every cycle.
(B) CPU receives the request and sends the data to EH-ETH.
(C) EH-ETH stores the received data and transmits to the Ethernet line.
- Description in this manual might be modified without notice.
EH-CPU448
Sending area
Ethernet
Fig. 7.3.1.1 Cyclic sending (Optional sending disabled)
7-13
Chapter 7 Automatic data transmission
EH-ETH
Sending buffer
(A)
(B)
(C)
Description