Entries In The Local Ip 265 Assignment List - Siemens SIMATIC S5 Manual

Programming the IP 265 with COM 265
9.4.2

Entries in the Local IP 265 Assignment List

Remember
The operands in the IP 265 user program may have both direct and symbolic addresses (identifiers)
in the control system flowchart. Each operand may also be supplemented by an operand commen-
tary.
Note
For your own personal documentation of the IP 265 user program as well as for the initialization of
timers, we would recommend programming symbolic identifiers. COM 265 provides an IP 265
assignment list for this purpose which can be invoked in the "Services" form. If you want to program
the operands in the IP 265 user program with direct addresses only, and if you do not want to
initialize any timers, you can skip this section and proceed directly to Section 9.4.3!
You make up the IP 265 assignment list before you begin entering the control system flowchart for
the IP 265 user program.
In the IP 265 assignment list, you assign your symbolic identifiers
• for the actuators and sensors of the process I/O
• for the parameters for data interchange with the CPU and
• for the intermediate values for data interchange with a second IP 265
to the fixed addresses of the IP 265 interfaces.
Later, when you edit your control system flowchart, you enter the symbolic identifers referenced in
the IP 265 assignment list in the "Editor" form's input fields for operands, together with the prefix "-"
(or "=" for parameters).
Whenever you move the cursor to a symbolic identifier in the control system flowchart, the IP 265
assignment list line associated with the operand is displayed immediately below the "Editor" form's
header. This operand assignment line shows the current operand reference. It also gives you the
opportunity to resolve and redefine an existing operand reference without having to exit the "Editor"
form ( Section 9.4.3).
Note
The IP 265 assignment list is a local operand assignment list, and must not be confused
with the global PLC assignment list.
Note
The IP 265 assignment list is a component of the IP 265 user program, and is stored on
the same file as that program.
9-30
IP 265
EWA 4NEB 812 6130-02a