without communication modbus

[scrwld]

Am I reading your code correctly? You have an interrupt inside an interrupt?

If so, I do not think that will work?

Hello everyone sorry did not reply earlier.

hello mackrackit , is enabled every time it happens the serial interrupt. is used to determine if there are no more characters to read and works. original code from modbus.pl

If (NewFrame = 1) OR (Length = 0) then 'New modbus frame start
NewFrame = 0
T2CON.2 = 1 ' Enable Timer2
Length = 1
EndIf

hello Jerson, the crc16 is working, the led is switched off in the Main, is switched on every time PIR1.5 = 1. when the fault occurs, the LED lights (I'm in the interruption) and then turn off.

hello HenrikOlsson, explain why "Define very large", look:

while (PIR1.5 = 1) 'Write modbus frame to buffer
buffer[Length] = RCREG
Length = Length + 1
if Length >=20 then ' here check buffer
Length = 0
EndIf
wend