Will this Program have to be written from onset, or it can be added when troubleshooting.

What type of language is that written

And can ladder Program be written for this also. 

hdhosseini

Dear member

OB82 may help you to find logical base address of the module
on which the error ocuured.Local parameters of this OB will help
to get more information about the error.The most important parameters
that may help you are:
1-OB82_MDL_ADDR as integer which point to logical base of faulty module
2-OB82_EV_CLASS which shows comming interrupt with B#16#39
or going interrupt with B#16#38
3-OB82_IO_FLAG which indicated type of module (input:B#16#54 ,output:B#16#55
)

this codes may help as simple programming sample, it is draft and will be improved
by spending more time on it.here a module with base address of B#16#16monitored.
indirect addressing can help to check all available modules with less labour on code
writing.think about it.

[code]////////////////////////////////
L OB82_EV_CLASS
L B#16#39
==I
JC COME
TAK
L B#16#38
==I
JC GONE
JU END


COME: NOP 0
L OB82_MDL_ADDR
L B#16#16 // LOGICAL BASE ADDRESS OF A INPUT MODULE
==I
= #ERR16
NOP 0
L OB82_IO_FLAG
L B#16#54
==I
= # ERR16_INPUT
NOP 0
A #ERR16
A # ERR16_INPUT
SET #MDL16_INPUT_FLT
NOP 0
JU END


GONE:NOP 0

L OB82_MDL_ADDR
L B#16#16 // LOGICAL BASE ADDRESS OF A INPUT MODULE
==I
= #ERR16
NOP 0
L OB82_IO_FLAG
L B#16#54
==I
= # ERR16_INPUT
NOP 0
A #ERR16
A # ERR16_INPUT
CLR#MDL16_INPUT_FLT


END:NOP 0

////////////////////////////////[/code]

regards