What does \"Siemens diagnostic buffer\" mean?
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Event 1 of 120: Event ID 16# 2943 I/O access error, writing P area, word access, Access address: 274 FB number: 7 Module address: 212 Requested OB: I/O access error OB (OB122) Priority class: 1 External error, Incoming event 09:00:52.659 PM 08/25/2017 (Coding: 16# 2943 017A 8E20 0112 0007 00D4)
IO access error. Region P, which is your on-site AI or AO module. Check to see if there is a fault with the simulation module
Event 1 of 120: Event ID 16# 2943 I/O access error, writing to P area, word access; Access address: 274, FB number: 7, Module address: 212. I/O access error during writing – this error can be understood as an issue related to output AO ) Module address: 212 (What does this address refer to? ）
Check whether there are any unused channels that are not connected to a load
What is the difference between a channel address and a module address?
Input/output channel error! Zone P! Data access type literal! Address 274! Cited by FB7! You can check whether channel 274 exists in the actual configuration! Then check whether the wiring is correct! To prevent CPU shutdown due to channel interruptions, you can download the OB122 block!
The 6th floor is the correct answer; check the hardware configuration for address 274 to determine which board and channel it corresponds to. Go to the site to investigate – it is usually either an open circuit, a short circuit, or an overload condition