Page 490 - Sensors and Control Systems in Manufacturing

Address Command Description Communications 443
0001 DB Port I (address 10) to the actuator
0002 10
0003 FE Compare accu = 0000 0000
0004 00
0005 CA If accu = 0000 0000
0006 14 jump to address 14
0007 00
0008 FE If accu does not = 0000 0000
0009 01 jump to address 00
000A C2 If accu does not = 0000 0001
000B 00 jump to address 00
000C 00
000D 3E Load 000 000 into accu
000E 00
000F D3 Bring accu to port O (address 11)
0010 11
0011 C3 Jump to address 00
0012 00
0013 00
0014 3E Load 0000 0001 into accu
0015 01
0016 D3 Bring accu to port O (address 11)
0017 11
0018 C3 Jump to address 00
0019 00
001A 00

TABLE 9.2 Program Statements

Once the program has been developed and tested, there is no fur-
ther need to use a keyboard and display. Thus, these components can
now be disconnected from the system. They do not need to be recon-
nected until program editing becomes necessary. The editing task
and program statement change is usually designated to a qualified
administrator or by the “Information Technology” personnel.
It always is a good practice to transfer a completed program from a
RAM to a memory whose contents are retained even when the supply