User Manual

Logical I/O blocks
Value objects
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● An alarm is to be created within the CFC chart as a commandable interface of an aggregate (e.g., limit
monitoring of an output value of an aggregate).
● Access from the operator unit is required, in order to modify a value
The following functions are integrated into the block:
● Evaluation of the priority array [PrioArr]
● Interruption of the output signal [OoServ]
● Limit value monitoring (OFFNORMAL alarm)
● Deviation monitoring
● Reliability monitoring [Rlb] (FAULT alarm)
● Change of state messages (events / system events)
● Process monitoring [StaFlg]
Binary Value (BVAL)
The binary value block provides access to the dataflow, that is, to signals and pins with a Boolean number
as the data type. The value objects can be inserted into the program structure and interconnected in any
configuration.
This block is used when, e.g.:
● An alarm is to be generated as the commandable interface of an aggregate (e.g., monitoring of logic
operations)
● The hours run are to be totalized after a logic operation
● Access from the operator unit is required, in order to modify a value
● Configurable switch types (normal, switch, pushbutton with delay)
The following functions are integrated into the block:
● Evaluation of the priority array [PrioArr]
● Interruption of the output signal [OoServ]
● Process value monitoring (OFFNORMAL alarm)
● Reliability monitoring [Rlb] (FAULT alarm)
● Change of state messages (events / system events)
● Configurable switch types (normal, switch, pushbutton with delay)
● Runtimes and monitoring periods
● Switch-command delays
● Process monitoring [StaFlg]
● Runtime totalization and maintenance messages
Multistate Value (MVAL)
The multistate value block provides access to the dataflow, that is, to signals and pins with a Multistate
number as the data type. The value objects can be inserted into the program structure and interconnected
in any configuration.
This block is used when, e.g.:
● An alarm is to be generated as the commandable interface of an aggregate (e.g., for limit monitoring)
● Access from the operator unit is required, in order to modify a value
● Hours run are to be totalized
The following functions are integrated in the block:
● Evaluation of the priority array [PrioArr]
● Interruption of the output signal [OoServ]
● Process value monitoring (OFFNORMAL alarm)
● Reliability monitoring [Rlb] (FAULT alarm)
● Change of state messages (events / system events)
● Runtimes and monitoring periods
● Runtime totalization and maintenance messages
● Process monitoring [StaFlg]