Longo programmable controller LPC-2.CA2M
3 OPERATION
Operation of the CA2M module is also dependent on parameters received on RS-485 communication
channel.
Reader RFID field is active always when module is powered up. If tag is put inside RFID field, reader
tries to resolve RFID tag code. If code is read successfully, module activates status
iIDNew,
generates a short beep, OK LED1 blinks and code is transmitted in
iIDW1 - iIDW3
status fields. In
main module application this code can be read out and authenticated. If code has appropriate
rights, main module should activate
oOK
command. If code is not authorized, main module
application should activate
oFault
command. Regarding command received, following action are
triggered on module:
oOK
==>
OK LED4 blink, short beep.
oFault ==>
FAULT LED3 blink, long beep.
Either command is received or not from main module application within 10 seconds, module clears
iIDNew
status and waits for next RFID tag. While CA1 module is waiting for authorization response,
new RFID tags can not be read.
3.1 Parameters
If parameter is set to logical “1”, is considered to be active, enabled or set. If parameter has
logical value “0” is considered to be inactive, disabled, or cleared.
Parameter can be status or command. Parameter as status means that CA2M module is sending
information to main module. On the other hand, command represents request from main module to
module.
iComm
: Normal state is “0”. If set, there is communication error or no communication established.
iIDNew
: When new RFID tag is recognized, this status is set active for 10sec or till authorization
command is received (
oOK
or
oFault
).
oBuzz:
While this command is active, buzzer is active.
oOK
: Command for authorization of RFID code.
oFault
: Command for rejecting authorization of RFID code.
oOccup:
While this command is active, occupied message LED6 is set.
oDNDist
: While this command is active, do not disturb message LED1 is set.
oRServ
: While this command is active, room service request LED2 is set.
oSOS
: While this command is active, SOS request LED5 is set.
oOkLD
: While this command is active, OK LED4 is set.
oFaultLD
: While this command is active, fault LED3 is set.
iIDW1
: Upper (most significant) third of RFID code (UID0, UID1)
iIDW2
: Middle third of RFID code (UID2, UID3)
iIDW3
: Middle third of RFID code (UID4, UID5)
iIDW4
: Lower (least significant) third of RFID code (UID6, UID7)
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