Gate Control; Gatecontrol - Siemens SIMATIC S5 IP 281 Equipment Manual

Operating Modes and Functions

Gate Control

6.6
The counters are equipped with a gate control offering the following capabilities.
– Hardware gate control by level
– Hardware gate control by pulse
– Software gate control
The gate mntrol is activated in control register 1/2 for the respective counter. The internal gate
can be closed with an EMERGENCY OFF gate stop for all types of gate control.
Priorities of the The following diagram shows the priorities of the gate control.
gate control
GAPU GALE
DI STA +
Hardware
gate
DI STO ~
A
node
Gate status The status of the gate is indicated in status register 1 for counter 1 and sta-
tus register 2 for counter 2.
6 – 30
I
GST
Intern. ~
gate
OFF
gate atop
for operating mode SC2A
Interrupt
7 6 5 4 3 2 1
GEN
I I
Gate
control
0
T
1: Gate open
O: Gate closed
AG 1992, Order No: 6ES5 996-0KP21
R 11192
Counting
pulse enable
for counter
status
register