Real Time Automation, Inc.
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10)
Gateway Hold Msg Timeout:
Enter the amount of time (in ms) to wait before sending a new
message to the other protocol.
11)
Queue Full Behavior
: Select which message to discard when the queue is full. Once the queue is full,
the gateway will discard either the oldest or newest message (Only used if Gateway Hold Msg
Timeout is non-zero).
12)
Queue Size
: Select how many complete messages the gateway will hold before starting to discard
(Only used if Gateway Hold Msg Timeout is non-zero).
Receive Data
– Operation Mode
Mark Data New on Change of State (COS)
When data comes into the RTA gateway, then it will be sent over to the matting protocol only if the data
has a different value.
Example for 460ETCA
Operator scans “HelloWorld” with a barcode scanner. That data is gathered in the ASCII side of
the RTA gateway, and is then processed and sent over to the ETC side and written over to the Allen-
Bradley PLC. The next time the operator scans the same barcode “HelloWorld”, the ASCII side gathers
the data, but the data didn’t change so it will not be sent over to the E
TC portion of the RTA gateway. If
the operator scans “1234567890” with the barcode scanner, the ASCII side of the RTA gateway will
process the data. Since the data has changed it will be sent over to ETC and sent over to the PLC.
Mark Data New on New Message
When data comes into the RTA gateway, then it will be sent over to the matting protocol regardless if
it’s the same data. This allows you to send the same data over again to the mating protocol.
Example ETCA
Operator scans “HelloWorld” with a barcode scanner. That data is gathered in the ASCII side of
the RTA gateway, and is then processed and sent over to the ETC side and written over to the Allen-
Bradley PLC. The next time the operator scans the same barcode “HelloWorld”, the ASCII side gathers
the data, processes it, then sends it over to the ETC portion of the RTA gateway to be sent out. If the
operator scans “1234567890”, the ASCII side of th
e RTA gateway will process the data and send it over
to ETC side and then to the PLC.