Chapter 5 Power Supply / CPU

5.5.2 STOP mode

In this mode, programs are not operated.

1) Processing when the operation mode is changed.

The output image area is cleared and output refresh is executed.

2)Operation processing contents

(1)I/O refresh is executed.

(2)Normal or abnormal operation and mounting conditions of the loaded module are checked.

(3)Communications service or other internal operations are processed.

5.5.3PAUSE mode

In this

mode, the

program operation is temporarily stopped. If it returns to the RUN mode, the operation continu

es from

the state

before the stop.

1) Processing when the operation mode changes

Data

registers and input image areas are not cleared and the operating conditions just before the mode chang

e is

maintained.

2)Operation processing contents

(1)I/O refresh is executed.

(2)Normal or abnormal operation and mounting conditions of the loaded module are checked.

(3)Communications service or other internal operations are processed.

5.5.4DEBUG mode(Standard type only)

In

this mode,

errors

of a

program are searched and the operation sequence is traced. Changing into this mode

is only possible from the

STOP mode. In this mode, a program can be checked with examination on its executi

on

state and

contents

of

each data.

1)Processing when the operation mode changes

(1)Data area is initialized at the starting time of the mode change complying with the restart mode, which has been set on the parameters.

(2)The output image area is cleared and input refresh is executed.

2)Operation processing contents

(1)I/O refresh is executed.

(2)Debugging process is executed complying with setting. I

(3)I/O refresh is executed after debugging process has executed to end of the program

(4)Normal or abnormal operation and mounting conditions of the loaded module are checked.

(5)Communications service or other internal operations are processed

5-20

Page 56 Page 58
Page 57
Image 57
LG Electronics 120S user manual Power Supply / CPU Stop mode, Pause mode, Debug modeStandard type only
Page 56 Page 58
Top Page Image Contents