User`s manual

8.7.3 Jumper Setting:
J1: I/O expansion bus, connect to J1 of 7188XC
J2: I/O expansion bus, connect to J2 of 7188XC
J7: Three channels of D/I or two channels of D/O
Jumper: Select D/I or D/O function
D/I: j4, j5,j6 select 2-3 (default setting)
D/O: j4, j5, j6 select 1-2
8.7.4 Programming
DO
SetDio4Dir( 0 ); // Set D/O channel_1
SetDio14Dir( 0 ); // Set D/O channel_2
SetDio4Low(); // Turn D/O channel_1 OFF
SetDio14Low(); // Turn D/O channel_2 OFF
SetDio4High(); // Turn D/O channel_1 ON
SetDio14High(); // Turn D/O channel_2 ON
DI
Data = SetTo1Dir( 1 ); // Set D/I channel_1
Data = SetTo0Dir( 1 ); // Set D/I channel_2
Data = SetDio9Dir( 1 ); // Set D/I channel_3
Data = GetTo1Dir( ); // Read D/I channel_1
Data = GetTo0Dir( ); // Read D/I channel_2
Data = GetDio9Dir( ); // Read D/I channel_3
I/O Expansion Bus for 7188X/7188E User’s Manual, Jun/2004 v1.4, 7PH-000-14---57