Specifications

Chapter 18. TCP/IP
409
[ 3 ] Declare TCP/IP Communications Pathway
Specify the following system settings by using the socket library (SOCKET.FN3):
• Communications device: Wireless communications device
• Link layer: Ethernet
For the setting procedure with the SOCKET.FN3, refer to Section 18.5, "Socket Library
(SOCKET.FN3)."
Given below is a setting example using SOCKET.FN3:
iftype% = 2 ’Specify wireless communications device
layermode% = 2 ’Specify Ethernest as a link layer
call "socket.fn3" 40 iftype%, layermode%, interface%
’Specify communications pathway
’(SOCKET.FN3 function #40)
’Returns value in interface%
’(The returned value will be used in
’[6] and [8].)
[ 4 ] Open Wireless Communications Device
Use the OPEN "COM3:" statement.
At the opening time, the following will take place:
• Powering up the wireless block
• Performing the self test of the wireless block
• Initializing the wireless block
For the details, refer to Section 17.3, "Wireless Communications-related Statement."
Given below is an example using the wireless communications-related statement:
hCom3% = 1 ’Specify a file number to be opened
’(The file number will be used also in [9].)
open "COM3:" as #hCom3% ’Open the wireless communications device
’(OPEN "COM3:" statement)