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Siemens SIMATIC S5 Equipment Manual

Siemens SIMATIC S5
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R
02/92
Operating Instructions
2.3
Possible Interrupts (Alarms)
Interrupts can be allocated to the following values by an entry into a data block
(IP
241):
For each initial track value (of a cam)
An interrupt is triggered only when the initial value is reached or exceeded from any travers-
ing direction.
+
This is used when the cam triggers a quick reaction at the start, but not at the end.
Example: Acoolantpump
isswitchedonrapidly.
his
notnecessarytointerruptthe cyclic program
toturnthispurnp
off.
For each track end value (of a cam)
An interrupt is triggered only when the end value is reached or exceeded from any traversing
direction.
+
This is used when the cam triggers a quick reaction at the end, but not at the start.
Example: The forward movement of a milling head is not necessarily started by an interruption of a cyclic program;
however, a quick stop is required at the end position.
For each track (of each cam) initial and end value
An interrupt is triggered when the initial and end value is reached or exceeded.
-t This is used when, independently from the traversing direction, a quick reaction is re-
quired at both ends of the cam.
Example: A valve is closed very quickly from both traversing directions.
With the NV value an additional interrupt can be allocated to the zero shift in the data
block
(IP 241).
– The first synchronization causes an interrupt.
– Each subsequent synchronization with the same NV value causes no interrupt in ro-
tary axis mode and in linear axis mode.
Example: A material conveyor
isactivatedvery
rapidlywhen
anew reference point is transferred
byspecifyingthezero
shift.
For enabled interrupts the module “automatically” generates an interrupt under
the following circumstances:
– during the reparameterization of set values
– during synchronization of software or hardware
- during deleting with B bit (see section 9.6)
If this is not desired, you can use the new functions in section 1.12.
IP
241 Equipment Manual
@
Siemens
AG
1989, Order No.: 6ES5
998-0KD21
2–3
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Siemens SIMATIC S5 Specifications

General IconGeneral
Product type designationSIMATIC S5
Programming languageSTEP 5
Digital inputsVaries by model
Digital outputsVaries by model
Analog inputsVaries by model
Analog outputsVaries by model
Supply voltage24V DC
CPU TypeVaries by model
MemoryVaries by model
Digital I/OVaries by model
Analog I/OVaries by model
CommunicationPROFIBUS
Operating Temperature0°C to 60°C
Relative Humidity5% to 95% (non-condensing)

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