User Manual

Logical I/
O blocks
General functions
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hours on the preset date. At the same time, the binary output [MntnInd]
(maintenance indication) is set to active for further use in the program. After
the operating hours reset, this output reverts to inactive. At the same time, the
time stamp of the last reset is stored in the time stamp operating hours reset
pin [TiStmOph].
The following applies to output blocks: When a feedback is configured,
operating hours count is done based on the feedback value and not based on
present value.
The maintenance interval can be further connected via the output present total
operating hours limit [PrOphLm].
The hours run are registered in 32-bit format, giving a maximum value of
4,294,967,296. With a resolution in seconds, this gives a value range of over
49,000 days (more than 136 years).
Out of Service [OoServ]
The physical input/output is disconnected from the I/O block via the out-of-
service pin [OoServ]. This out of service function is normally used in cases
where a hardware module is faulty or temporarily not required, e.g., sensor not
connected or faulty. This is a way of suppressing reliability problems and the
associated FAULT alarms.
If the out-of-service property of an input block is set [OoServ=True], the
physical input is disconnected from the present value ([PrVal] = [DefVal]) and
any changes in the physical input will not be transmitted to [PrVal].
Furthermore the reliability [Rlb] and status flag [StaFlg] are also disconnected
from the physical input. In this state, the properties [PrVal] and [Rlb] can be
modified for test purposes.
If the out-of-service property for an output block is set [OoServ=TRUE], the
physical output is disconnected from [PrVal]. Changes in [PrVal] will not be
transmitted to the physical output, which retains its last value. Furthermore, the
reliability [Rlb] and status flag [StaFlg] are also disconnected from the physical
output. In this state, [PrVal] and [Rlb] can be modified for test purposes. Other
functions that depend on these properties are not dependent on the [OoServ]
property. The [PrVal] is set in accordance with the priority array [PrioArr], but
the value is not transmitted to the physical output.
Alarm and event functions
Each input, output and value block can be enabled and disabled as an alarm
source. The blocks are configured by setting the relevant values at the block
pins. See Alarm Strategy.
Reliability [Rlb]
The reliability of the present value and of the physical input/output is
represented by the reliability pin [Rlb]. This makes it possible to detect and
signal faults and errors, such as addressing errors, sensor problems (short-
circuit or open circuit) and module faults (missing or incorrect modules). See
Reliability Table.
Commissioning State [ComgSta]
The state of the I/O can be entered at [ComgSta], the commissioning state pin,
in the commissioning phase. The setting does not affect the program; it merely
serves as a kind of notepad for commissioning purposes.
The following states are available for selection:
● Checked
● Not Checked [DefVal]
● Periphery Defect or Missing
● Cable Defect or Missing
● I/O Defect or Missing
Maintenance message
Feedback value
Value range for run time
totalizing
Input block
Output block