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Temporary CPU error:

Created by: k.kuijvenhoven at: 9/28/2016 9:38 AM (7 Replies)

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9/28/2016 9:38 AM	Rate (0)
k.kuijvenhoven Posts: 22 Rating: (2)	Hello everyone, I have a situation that i don't get solved, so can someone help me in the right direction. The message i get from the CPU is: Temporary CPU error: I/O read access error (I address 0) in FB 613 affecting OB 125 execution Internal address details: Caddr=16#000000FC, area: P area, addr: 0 Background information: FB 613 = Send_P2P OB 125 = Serial Communication OB (RS232) The message leaves after a few seconds. What i am doing is i have a serial connection (RS232) with an EVC, this happen after i switch the CPU from STOP to RUN.
k.kuijvenhoven Posts: 22 Rating: (2)	Last edited by: AutoGen_2779485 at: 9/28/2016 9:40:03 AM
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9/28/2016 9:44 AM	Rate (0)
mopS04 Posts: 5521 Rating: (1058)	AutoGen_2779485 Hello everyone, I have a situation that i don't get solved, so can someone help me in the right direction. The message i get from the CPU is: Temporary CPU error: I/O read access error (I address 0) in FB 613 affecting OB 125 execution Internal address details: Caddr=16#000000FC, area: P area, addr: 0 Background information: FB 613 = Send_P2P OB 125 = Serial Communication OB (RS232) The message leaves after a few seconds. What i am doing is i have a serial connection (RS232) with an EVC, this happen after i switch the CPU from STOP to RUN. hi, somewhere in FB613 the program can´t reach address 0. Is this address projected? regards,
mopS04 Posts: 5521 Rating: (1058)
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9/28/2016 9:50 AM	Rate (0)
k.kuijvenhoven Posts: 22 Rating: (2)	i can't look inside FB613 because it's a system FB, it's know-how protected.
k.kuijvenhoven Posts: 22 Rating: (2)
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9/28/2016 10:13 AM	Rate (0)
mopS04 Posts: 5521 Rating: (1058)	what kind of CPU do you have? S7-1200/1500 or S7300/400? Have a look in TIA-help what to config on parameter PORT at FB613
mopS04 Posts: 5521 Rating: (1058)
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9/28/2016 10:26 AM	Rate (0)
k.kuijvenhoven Posts: 22 Rating: (2)	I have a CPU 1510SP F-1 PN from the ET200SP serrie. At the port connection i have specified the RS232 card on which the communication must running. After a few seconds the communication works fine.
k.kuijvenhoven Posts: 22 Rating: (2)	Last edited by: k.kuijvenhoven at: 9/28/2016 10:28:08 AM
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9/28/2016 10:42 AM	Rate (1)
mopS04 Posts: 5521 Rating: (1058)	When this comes only in the start-up of the cpu, I would check the start-up parameter in the cpu-properties. If this doesn´t help, you maybe need to delay the first call of FB613 after start-up. Is this really everytime you turn the cpu from Stop to Run, or only when you power-on the PLC-system?
mopS04 Posts: 5521 Rating: (1058)
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This contribution was helpful to 1 thankful Users k.kuijvenhoven

9/28/2016 11:42 AM	Rate (0)
k.kuijvenhoven Posts: 22 Rating: (2)	Yes it happens every time when i switch from STOP to RUN. But i have solved it, as you suggested i have add a delay between the modbus comm load and the first modbus master call. I have now used a delay of 5 seconds, maybe shorter is possible but it's good enough for me.
k.kuijvenhoven Posts: 22 Rating: (2)
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This contribution was helpful to 1 thankful Users mopS04

2/12/2018 2:40 PM	Rate (0)
Jen_Moderator Posts: 8171 Rating: (174)	New question published by bilalifc is split to a separate thread with the subject Error in S7-1200 cpu: "Temporary CPU error: I/O write access error (Q address 262) in OB 30 affecting OB 30 execution Incorrect address, operand ignored Processing will continue". Best regards Jen_Moderator
Jen_Moderator Posts: 8171 Rating: (174)
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