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CHAPTER 14 OTHER FUNCTIONS
14
14.5 Hub Connection Status Monitor Function
14.5 Hub Connection Status Monitor Function
The current connection status and transmission speed of an E71 and a hub and the number of times that the E71
detected disconnection can be checked using the following buffer memory areas. For details on buffer memory areas,
refer to the list of buffer memory addresses. ( Page 35, Section 3.5.2)
If an error has occurred 65536 times or more, the count stops at 65535 (FFFF
H
). Write "0" to this area using a program to
clear the stored value.
Buffer memory area Description
Hub connection status area (address: C9
H
)
Stores the current connection status and transmission speed
of an E71 and a hub.
Disconnection detection count (address: 5203
H
)
Stores the number of times that the E71 detected
disconnection after an initial process. Disconnection is
detected in any of the following cases.
• Disconnection between the E71 and a hub
• Cable removal from the hub side connector
• Hub power-off
• Cable removal from the E71 side connector
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