Siemens SIMATIC OEM PP32, Руководство по эксплуатации оборудования

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1-9
OEM Push Button Panel Equipment Manual
Release 08/98
The Lamp/Key test serves to test the functional capabilitity of all the keys and
lamps on the Push Button Panel. The Lamp/Key test can be activated by the
following measures in normal operation:
S
By pressing the key assigned to the Lamp/Key test function by the
corresponding parameter.
S
By setting the two LED bits of the key assigned to the Lamp/Key test
function according to the configuration. The bits must be set in the PLC
using a relevant program.
The Lamp/Key test function is assigned to Key 1 (top right) in the pre-adjusted
system settings.
On activating the Lamp/Key test, the unit switches to the corresponding
operating mode. In this case
S
the BF LED flashes,
S
the LEDs integrated in the Push Button Panel keyboard are activated,
S
all the Push Button Panel digital outputs are set to 1.
After pressing any key when in operating mode Lamp/Key test,
S
the LED/lamps go out for the period in which the key is pressed,
S
all the Push Button Panel digital outputs are set to 0.
This is valid for the period in which the key is pressed. All the keys and digital
inputs can be tested in this way.
In order that no unwanted signals are transmitted to the PLC during the
Lamp/Key test, the following restrictions are valid in respect of Push Button
Panel operation:
S
the inputs are locked, no signal exchanges are reported to the PLC,
S
the last status of all the keys is maintained by the PLC until normal
operation returns.
The last key operation reported to the PLC is the pressing of the Lamp/Key test
button.
To terminate the Lamp/Key test,
S
release the corresponding key, or
S
reset the corresponding bits in the PLC
The unit returns to normal operation and the restrictions regarding the Push
Button Panel operation are released.
Lamp/Key test
Product Description