Awesome! Yes it is fortran, openVMS. I am communicating with a windows box using modbus commands.
here is the write and read
65478 CONTINUE
I_STAT = SYS$QIOW( ! Issue the command
1 , %VAL( J_TCP_CHAN )
2 , %VAL( IO$_WRITEVBLK )
3 , %REF(IOSB_QIO)
4 ,
5 ,
6 , %REF(...