Siemens 6AV7801-0BA12-0AC0 – SIMATIC Panel PC 677 12"
Siemens 6AV7801-0BA12-0AC0 – SIMATIC Panel PC 677 12". Van Haelen supplies it refurbished, with a 24-month warranty.
Also written as: 6AV7 801-0BA12-0AC0, 6AV78010BA120AC0
The Siemens 6AV7801-0BA12-0AC0 is a operator panel or industrial PC. Manufacturer type designation: SIMATIC Panel PC 677 12". Key data: HS code 84714100. Back up the project before replacing the panel and check that the software version matches. Ask us about exchange, repair and a spare-parts pool for your installation.
Available as
Product data
| Manufacturer | Siemens |
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| Part number | 6AV7801-0BA12-0AC0 |
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| Type designation | SIMATIC Panel PC 677 12" |
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| ETIM | EC001414 |
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| HS code | 84714100 |
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| Country of origin | DE |
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Documentation from the manufacturer
All Operator panels
Faults and fixes 6AV7801-0BA12-0AC0
6AV7801-0BA12-0AC0 (Panel PC 677): the TEMP LED is lit orange, what now?
Two LEDs sit at the top left of the front: POWER (green) means voltage is present, TEMP (orange) that a temperature threshold has been exceeded. Three sensors measure the processor, the area beneath the power supply and the intake air next to the DVI port. When a threshold is exceeded, the device and CPU fans run at full speed and the SOM or DiagMonitor software reports the fault. Siemens lists these checks: are the fan openings free, is the fan still turning (speed shown in SOM or DiagMonitor), is the ambient temperature within +5 to +45 °C, is the power supply load within its limit, and are the heat sinks free of dust? The alarm stays until the temperature is back below the threshold and you acknowledge it in SOM with the broom icon; without SOM or DiagMonitor, restart the PC. Source: Siemens, SIMATIC Panel PC 677 Operating Instructions (A5E00877769-01), 10.1, 11.3 and 14.3.
6AV7801-0BA12-0AC0 (Panel PC 677) beeps at start-up: what does the code mean?
At power-up the BIOS tests the hardware (POST). If it finds an error, a beep code of 2 x 2 sequences of 1 to 4 beeps sounds. Each pair of sequences is one hexadecimal digit: 1-1 is 0, 1-2 is 1 and so on up to 4-4 is F. Example from the manual: 1-3 and 3-1 gives 28H, determining the memory size. For 28H, 2AH, 2CH, 2EH, 30H, 38H, 5CH, 60H, 62H and BCH Siemens says: replace the memory modules. 3AH is the processor cache (replace the processor), 90H the hard disk (disconnect it and replace it if necessary) and 55H the USB hardware (remove USB devices). For 3CH test by disabling hardware components in Setup, for 49H and 98H also by removing expansion cards. In addition: two short beeps are a BIOS checksum error, which can occur after a battery change or with a flat battery; one long and five short an Ethernet error; one long and eight short an error reading the MPI system information. Source: Siemens, SIMATIC Panel PC 677 Operating Instructions (A5E00877769-01), 13.2 and 13.3.
6AV7801-0BA12-0AC0 (Panel PC 677): wrong date and time or 'System battery is dead'
First set date and time in the BIOS Setup (F2 during start-up). If they are still wrong afterwards, or the BIOS reports 'System battery is dead - Replace and run SETUP', the backup battery is flat or defective. Siemens calls this battery a wearing part: replace it every five years, only with the same type or the type Siemens recommends (A5E00331143). Note the BIOS settings first: with BIOS profile 'Standard' the configuration data is lost when the battery is changed, with 'User' it is kept and you only set date and time again. The battery can be changed with the power on, but Siemens recommends switching the device off first. Source: Siemens, SIMATIC Panel PC 677 Operating Instructions (A5E00877769-01), 12.7.7, 13.1 and 14.1.
6AV7801-0BA12-0AC0 (Panel PC 677) does not boot: 'Operating system not found' or 'Failure Fixed Disk'
For 'Operating system not found' Siemens lists these causes: no operating system present, the wrong drive addressed (a disk in drive A or B), an incorrect active boot partition, a wrong boot drive setting in SETUP, or a hard disk that is not connected or defective. 'Failure Fixed Disk' is an error accessing the hard disk: check SETUP. 'Previous boot incomplete - Default configuration used' follows an aborted start-up, for example after a power failure: set the SETUP settings again. If the software has to be reinstalled, use only the Restore DVD of this device: the order number on the DVD must match the one on the rating plate, because chipsets and drivers differ between devices. Restoring also erases licences and authorizations; back them up first with the Automation License Manager. Source: Siemens, SIMATIC Panel PC 677 Operating Instructions (A5E00877769-01), 12.8.3, 12.8.4 and 13.1.
What do I check when replacing a 6AV7801-0BA12-0AC0 (Panel PC 677)?
Check the rating plate for the power supply: 24 V DC (20.4 to 28.8 V, SELV) or 100 to 240 V AC (autorange); the replacement must have the same. With the same order number, chipset and drivers match your image: carry over the hard disk or the image and back up licence keys first. With clamps and the encircling seal the front is IP65, with screws IP54; the 12-inch touch variant cannot be fixed with screws. After transport in cold weather, wait about 12 hours before switching on. Siemens ended production of the Panel PC 677 in May 2010 (product note 42262120). Source: Siemens, SIMATIC Panel PC 677 Operating Instructions (A5E00877769-01), 5, 12.8.3, 14.1 and 15.1.
Fault not fixed: replace, exchange or repair the 6AV7801-0BA12-0AC0?
Replacing from stock is the fastest route when a machine is down. Van Haelen supplies the 6AV7801-0BA12-0AC0 refurbished: tested to this family's test protocol, with a test report per serial number, with a 24-month warranty. The current lead time is shown with the condition on this page. Prefer an exchange: you get a refurbished unit straight away and return the faulty one within 14 days. Repairing your own unit is also possible: diagnosis, then a fixed price.
What information should I send for a quick diagnosis?
A photo of the rating plate (order number, product version, firmware), the exact fault code or LED state, when the fault occurs (at power-up, on enable, under load) and what you have already tried. For PLCs an export of the diagnostic buffer, for drives the parameter set. With that we can usually say the same day whether replacing, exchanging or repairing is best.
Frequently asked questions
What does refurbished mean?
Cleaned, inspected, aged or critical components replaced and tested to our test protocol for this product family. You get a 24-month warranty, a test report and a serial number label.
Can I exchange or repair my faulty unit?
Yes. With an exchange Van Haelen supplies a refurbished unit straight away and you return the faulty one. With a repair you first get a diagnosis and then a fixed price, with test report and warranty.