最近一段时间，设备经常发生自动停机，基本上每个月来一次。查程序引起停机的条件都不成立。查CPU的故障信息缓冲区，每次停机时的信息如下：
CPU 416-3 DP
Event 1 of 3000: Event ID 16# 38B3
I/O access error when updating the process image input table leaving state
P area, word access, access address: 12
process image partition no. : 0
not user relevant (Z1): 2942
Requested OB: Program execution error OB (OB85)
Priority class: 25
External error, outgoing event

Event 2 of 3000: Event ID 16# 38B3
I/O access error when updating the process image input table leaving state
P area, word access, access address: 8
process image partition no. : 0
not user relevant (Z1): 2942
Requested OB: Program execution error OB (OB85)
Priority class: 25
External error, outgoing event

Event 3 of 3000: Event ID 16# 38B3
I/O access error when updating the process image input table leaving state
P area, word access, access address: 4
process image partition no. : 0
not user relevant (Z1): 2942
Requested OB: Program execution error OB (OB85)
Priority class: 25
External error, outgoing event

Event 4 of 3000: Event ID 16# 38B3
I/O access error when updating the process image input table leaving state
P area, word access, access address: 0
process image partition no. : 0
not user relevant (Z1): 2942
Requested OB: Program execution error OB (OB85)
Priority class: 25
External error, outgoing event

Event 5 of 3000: Event ID 16# 38B4
I/O access error when updating the process image input table leaving state
P area, word access, access address: 12
process image partition no. : 0
not user relevant (Z1): 2943
Requested OB: Program execution error OB (OB85)
Priority class: 25
External error, outgoing event

Event 6 of 3000: Event ID 16# 38B4
I/O access error when updating the process image input table leaving state
P area, word access, access address: 8
process image partition no. : 0
not user relevant (Z1): 2943
Requested OB: Program execution error OB (OB85)
Priority class: 25
External error, outgoing event

Event 7 of 3000: Event ID 16# 38B4
I/O access error when updating the process image input table leaving state
P area, word access, access address: 4
process image partition no. : 0
not user relevant (Z1): 2943
Requested OB: Program execution error OB (OB85)
Priority class: 25
External error, outgoing event

Event 8 of 3000: Event ID 16# 38B4
I/O access error when updating the process image input table leaving state
P area, word access, access address: 0
process image partition no. : 0
not user relevant (Z1): 2943
Requested OB: Program execution error OB (OB85)
Priority class: 25
External error, outgoing event

Event 9 of 3000: Event ID 16# 38C4
Distributed I/Os: station return
Address of the affected DP slave: station number: 3
DP master system ID: 1
Log. base address of the DP slave: Input address: 16378
Log. Bbase address of the DP master: 16383
Requested OB: Rack failure OB (OB86)
Priority class: 25
External error, Outgong event

Event 10 of 3000: Event ID 16# 39B3
I/O access error when updating the process image input table leaving state
P area, word access, access address: 12
process image partition no. : 0
not user relevant (Z1): 2942
Requested OB: Program execution error OB (OB85)
Priority class: 25
External error, outgoing event

Event 11 of 3000: Event ID 16# 39B3
I/O access error when updating the process image input table leaving state
P area, word access, access address: 8
process image partition no. : 0
not user relevant (Z1): 2942
Requested OB: Program execution error OB (OB85)
Priority class: 25
External error, outgoing event

Event 12 of 3000: Event ID 16# 39B3
I/O access error when updating the process image input table leaving state
P area, word access, access address: 4
process image partition no. : 0
not user relevant (Z1): 2942
Requested OB: Program execution error OB (OB85)
Priority class: 25
External error, outgoing event

Event 13 of 3000: Event ID 16# 39B3
I/O access error when updating the process image input table leaving state
P area, word access, access address: 0
process image partition no. : 0
not user relevant (Z1): 2942
Requested OB: Program execution error OB (OB85)
Priority class: 25
External error, outgoing event

Event 14 of 3000: Event ID 16# 39B4
I/O access error when transferring the process image to the output modules entering state
P area, word access, access address: 12
process image partition no. : 0
not user relevant (Z1): 2943
Requested OB: Program execution error OB (OB85)
Priority class: 25
External error, outgoing event

Event 15 of 3000: Event ID 16# 39B4
I/O access error when transferring the process image to the output modules entering state
P area, word access, access address: 8
process image partition no. : 0
not user relevant (Z1): 2943
Requested OB: Program execution error OB (OB85)
Priority class: 25
External error, outgoing event

Event 16 of 3000: Event ID 16# 39B4
I/O access error when transferring the process image to the output modules entering state
P area, word access, access address: 4
process image partition no. : 0
not user relevant (Z1): 2943
Requested OB: Program execution error OB (OB85)
Priority class: 25
External error, outgoing event

Event 17 of 3000: Event ID 16# 39B4
I/O access error when transferring the process image to the output modules entering state
P area, word access, access address: 0
process image partition no. : 0
not user relevant (Z1): 2943
Requested OB: Program execution error OB (OB85)
Priority class: 25
External error, outgoing event

Event 18 of 3000: Event ID 16# 39C4
IDistributed I/Os: station failure
Address of the affected DP slave: station number: 3
DP master system ID: 1
Log. base address of the DP slave: Input address: 16378
Log. base address of the DP master: 16383
Requested OB: Rack failure OB (OB86)
Priority class: 25
External error, outgoing event


每次故障停机后，复位机器后再重新开机则设备可正常运行。这个会引起设备自动停机吗？如何清除此故障？