Siemens SIMATIC S5 Equipment Manual page 194

Glossary
Incremental encoder
Interrupt
1/0 area
L+
Linear axis operation
Low byte
Master/Slave operation
NV value
Operation in parallel mode
Parameterization
P–area
Peripheral byte O
PESP
PLC
Position encoders
Preliminary contact
PYO
Q–area
Relative byte
Rotary axis operation
S5
10 – 2
Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com
An encoder which emits individual pulses when its axis
rotates
The possibility of obtaining a quick reaction from the
programmable controller when an alarm is triggered
Address area for peripheral modules in the programmable
controller
24 V connection, positive terminal
24 V connection, reference point
Traversing between fixed limits
Least significant part of a 16–bit word
The possibility of detecting the triggering module, when
several interrupt–capable modules are used on one
interrupt line
Zero shift value
Operating mode in which an encoder can handle a maxi–
mum of 32 reactions in pseudo single–channel operation
Supplying the used tracks with start and end values and
with interrupt identifiers and for the selection of operating
modes
Address area for peripheral modules in the programmable
controller
Address byte O in the 1/0 area which is used for interrupt
processing in some programmable controllers
Address group signal for addressing peripheral modules
(peripheral memory)
Programmable logic controller
Encoders providing position information in form of pulses
(incremental) or coding (absolute)
A switch installed on the system or a reference point
provided by the S5
See peripheral byte O
Extended address area for peripheral modules in the pro–
See byte O
Cyclic traversing as used with rotary plates or continuous
conveyors
R 02/92