ABB DSDX452L Bus backplane monitoring

Description

I/O boards, most errors are diagnosed simply by locating the red error indicators. The same
status, including more detailed diagnostic messages are also available on operator station
displays.
Further information in this state can be obtained with the Advant Station 100 or 500 Series
Engineering Station.
Basic system tests include:
• CPU Instruction set test
• CPU Illegal instruction trap
• CPU watchdog, high and low level (Fail, Infinite loop, overload)
• Bus backplane supervision, address error, bus time-out (no response)
• Dynamic RWM error detection and correction
• System clock supervision
• CRC sign calculation on system software modules
• CRC sign calculation on application database and AMPL program
• Task execution supervision
• Operating system call error detection
• Communication handlers (ISO OSI 7-layer model)
• Peripheral driver diagnostics.
• Power supply fail
• Cabinet fan fail, over-temperature.

For dangerous errors, such as program system illegal execution, appropriate actions and
reporting are taken directly by the operating system. In less serious situations, the status is also
available to the application program, which can decide on the correct action to take. Some
safety applications may for example allow execution to continue when communication to other
systems is lost, while others would regard this as a shutdown condition.
The result of a serious system fault is to shut down operation and halt the CPU. This action will
cause the CPU Run status line to fall (i.e. go to zero) and de-energize all outputs.
It is important to note that the main function of the basic tests is to ensure that all hardware
components are operable, that the firmware and application software is executing and is not
corrupted by spurious changes. It is therefore not necessary to design additional test programs,
(for example pattern tests with output vector comparison of the logic) to ensure that the safety
system has not changed.

Details: If you need an urgent delivery order, please feel free to contact us, and we will do our best to meet your needs.
Price issue: If you find that other suppliers offer a cheaper price for the same product, we are also willing to provide you with a reference price and give you further discounts.
Contact Us:+86 18106937731
Whatapp:+86 15359293870
Email: geabbdcs@gmail.com / 2872270648@qq.com
Contact Person: Chen

Stock products of the same series: