Special instructions
1003
Part III FP Instructions
F149_MSG
Message display
When the F149_MSG instruction is executed, the message-flag R9026 is set and the message
specified by s is set in special data registers DT9030 to DT9035 (DT90030 to DT90035 for FP0
T32CP, FP2/2SH, FP10/10S/10SH). Once the message is set in special data registers, the
message cannot be changed even if the F149_MSG instruction is executed again. You can clear
the message with the FP Programmer II.
This instruction also exists as a P instruction (for FP2/2SH, FP3/5, FP10/10SH PLC types), which
is only executed at the rising edge of the EN trigger. Select [Insert P instruction] from the
"Instructions" pane if you require a P instruction. To facilitate reuse, the instruction then appears
under "Recently used" in the pop-up menu. Press <Ctrl>+<Shift>+<v> within the programming
area to open the list of recently used elements.
PLC types
Availability of F149_MSG (see page 1321)
Variable Data type Function
s STRING(12) message to be displayed
For Relay T/C Register Constant
s - - - - - - - - - character
Description
This instruction is used for displaying the message on the FP Programmer II screen. After
executing the F149_MSG instruction, you can see the message specified by s on the FP
Programmer II screen.
Data types
Operands
Example
In this example the function has been programmed in ladder diagram (LD) and structured text
(ST).The same POU header is used for all programming languages.
POU header
All input and output variables used for programming this function have been declared in the POU
header.
Body
When the variable start is set to TRUE, the function is carried out.
LD
ST
When programming with structured text, enter the following:
IF start THEN
F149_MSG('Hello, world');
END_IF;
To Next Page
Loading...
Need help?
General
