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Author Topic: SAS development  (Read 4393 times)
rogertrullo
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« on: July 02, 2013, 05:42:31 PM »
hello friends
I am new to sas protocol.
I have the sas test program, and I see that it sends 0x80 and 0x81 every 200 ms.
In the protocol says that general polls are the address ORed with 0x80 and that it cosists of only 1 byte.
In this case the address is 1, so the 0x81 makes sense.
Can someone explain me why does the program send the 0x80 instead of only the 0x81?
Thanks in advance.
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rogertrullo
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« Reply #1 on: July 02, 2013, 05:48:15 PM »
Looking more in detail I think it is related to the syinchronization, anyway not very sure about it. Can anyone please explain me. Thanks.
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Foster
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« Reply #2 on: July 03, 2013, 12:50:27 AM »
0x80 is general poll and basically gets all the machines on that loop to listen for their address.
Sync as you called it sounds fine
Just like the 80 81 you are seeing
it does not hurt to sent a 80 before you poll each machine
it is only 1 byte and does not impede machine response

80 is also a valid address for some long polls for like:
Some Machine Settings - especially the Casino details printed on vouchers (tickets)
SAS progressive
« Last Edit: July 03, 2013, 01:03:53 AM by Foster » Logged
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rogertrullo
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« Reply #3 on: July 06, 2013, 12:59:37 AM »
Thanks, I am trying to connect the pc to a WMS 550 machine.
I am wiring manually to the port "host comm" rx tx gnd to rs232 cable and connecting it to the pc directly.
In the machine I configure the address but In the SAS test I just see the frames sended by the PC, looks like the machine is not responding even to general polls.
Can anyone explain me how the connection should be made beteween the pc and the backplane of the machine?
Thanks in advance!!
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archi
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« Reply #4 on: July 13, 2013, 03:17:59 PM »
Hi, I'm a french rookie in casino technologies, is there anyone, who can send me some informations regarding SAS protocol (development and integration).

To be clear, I've been ask to develop a SAS connector (hardware and software) to integrate an Online ticketing system...

So, thanks for your help !

Archi
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