Problem

Bellen

How to transfer system signels to the PLC via RS232,such as Motor on, Auto on, etc.

Rob side             PLC side

Motor On   ---->    MR100

Auto On    ---->     MR101

Thanks

Bellen

Or is associated with a variable.

PERS num RM100;

PERS num RM101;

Motor On   ---->    RM100

Auto On    ---->    RM101

Thanks

DavidLanham

Bellen,
You will need to define a virtual Output for both signals then you can read the state of the Outputs and set your RM100 and RM101 based on the state of the output.  Example:

Define a Virtual board VIO1 under units in configurations
Define a Virtual Output voMotorsOn and connect it to VIO1 board
Define a Virtual Output voAutoOn and connect it to VIO1 board
Define a System Output and connect voMotorsOn to MotorOn system output (this means even if your program is not running the virtual output voMotorsOn will always be updating with the state of MotorOn
Define a System Output and connect voAutoOn to AutoOn

now in your rapid code you would need to read the state of the outputs and update your variables

IF Output(voMotorsOn)=TRUE THEN
  RM100:=1;
ELSE
  RM100:=0;
ENDIF

IF Output(voAutoOn)=TRUE THEN
  RM101:=1;
ELSE
  RM101:=0;
ENDIF

Bellen

Thanks for your help to answer my questions. I will try it next week. If I have further problem, I may need your assistance again. Wish you have nice weekend!

Bellen

Bellen

I have another question, how to control System Input via RM200,for example,

PERS num RM200;

PERS num RM201;

PERS num RM202;

  RM200 ---->    MotorOn

  RM201 ---->    Start 

  RM202 ---->    Stop

What's the difference between Start and StartAtMain signal?

Can I put these codes in the Daemon (background program or multitasking), and then set routine to semistatic?

Thanks

Bellen

I have define a virtual board, then define a virtual output signals both voMotorsOn and voAutoOn, then connect them to system output MotorOn and AutoOn, and checked them at Input and output\View\I/O units\VI01\Signals\voMotorOn and voAutoOn, the states is OK.

then write code in the rapid

IF Output(voMotorsOn)=TRUE THEN
  RM100:=1;
ELSE
  RM100:=0;
ENDIF

but there is an error message appear, Event Message---Output not function reference, how to solve this problem.

Thanks