Advantech PCI-1671UP Startup Manual page 26

Example
This example prepares the board to talk and addresses three devices (at addresses 8, 9, and
10) to listen.
C
GPIB-488
char *command;
command = "\0x3f\0x5f\0x40\0x28\0x29\0x2a";
ibcmd (board, command, 6);
3-9
Chapter 3 GPIB 488.1 Library Reference
Programming Reference Manual