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α
2 Simple Application Controllers
2.1.3
System Memory Bits
These System Memory Bits can provide predefined signals - Always On, Always Off, 0.5
second On, 0.5 second Off, or provide information about the Real Time Clock time or errors
etc. There are 24 Memory bits that are referenced as M01, M02, ... M24.
Table 2.4: System Bits for the
System
Bit
M01
Always "ON".
M02
Always "OFF".
M03
Alternate - 0.5 seconds "ON", 0.5 seconds "OFF".
M04
"ON" when Real Time Clock data error occurs.
M05
"ON" when Summer time schedule is activated.
M06
"ON" when AS-interface communication Error occurs.
"ON" when communication Error caused by AS-interface power failure
M07
occurs.
M08
Pulses "ON" when Stop mode turns to Run mode in the
M09
Pulses "OFF" when Stop mode turns to Run mode in the
M10
"ON" during DCF77 decoding
M11
Pulses "ON" when DCF77 finishes decoding without an error
"ON" when CD (DCD) signal is turned ON (receiving CD signal from
M12
the modem.)
M13
"ON" when it is possible to access the GSM network.
"ON" when the α2 series controller is accessed via GSM
M14
M15
"ON" when DCF77 finishes decoding with an error
M16
"ON" when external power for the 2DA board is on
M17
"ON" when there is a sensor defect at I01
M18
"ON" when there is a sensor defect at I02
M19
"ON" when there is a sensor defect at I03
M20
"ON" when there is a sensor defect at I04
M21
"ON" when there is a sensor defect at I05
M22
"ON" when there is a sensor defect at I06
M23
"ON" when there is a sensor defect at I07
M24
"ON" when there is a sensor defect at I08
2.1.4
Function Blocks
Programming the
blocks. They process the information received from the previously mentioned inputs and
control the system Outputs. They can also provide input signals or information to other function
blocks using word outputs pins. To make programming easier, the Function Blocks have all
been preprogrammed. However, parameters within each function block dialog box can be set
according to the intended application. There are 40 Function Blocks available, they are
described in detail throughout Chapters 5 and 6.
α
2 Series Controller
Description
α
2 Series Controller is based upon the combination of different function
Function Block Programming 2
AL2-10M AL2-14M
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−
α
2 Series.
α
2 Series.
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2 - 3
AL2-24M
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