Siemens SIMATIC S5 Equipment Manual

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

Product type designation	SIMATIC S5
Programming language	STEP 5
Digital inputs	Varies by model
Digital outputs	Varies by model
Analog inputs	Varies by model
Analog outputs	Varies by model
Supply voltage	24V DC
CPU Type	Varies by model
Memory	Varies by model
Digital I/O	Varies by model
Analog I/O	Varies by model
Communication	PROFIBUS
Operating Temperature	0°C to 60°C
Relative Humidity	5% to 95% (non-condensing)