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EM1500 Configuration
Poll pass-through
Pass polling responses through to network connection. If checked, the results from the
polling sequence (generated by the serial device) are passed over the network to the
peer. Thus, the peer gets to see the polling results, but not the queries which generated
them. If not checked, neither the queries nor the results are sent to the peer, thus poll-
ing happens transparently to the peer. Checking this option is only useful if “Poll
when connected” is also checked.
Poll initial
This option is reserved for a future firmware release. Leave it unchecked for now.
Poll fixed interval
If checked, the poll interval timer applies between the
start
of successive poll
sequences. Otherwise, it applies between the end of one sequence and the start of the
next. If the poll sequence takes a long time, the latter will result in fewer polls per unit
time.
Poll when connected
If checked, polling is applied whether or not a network connection is established. Oth-
erwise, polling is only performed when there is no network connection. This is most
useful when packetizing is in use, otherwise the polling can interfere with the normal
data stream.
Close if poll timeout
When checked, connection will be closed if poll script times out. Otherwise, further
polling is inhibited but the connection remains open. This is only applicable if “Poll
when connected” is checked.
This checkbox is also available in the “Closing” tab.
Poll interval (ms)
Interval between polling. If “Poll fixed interval” is checked, this is the time between
the start of one poll sequence and the start of the next. Otherwise, it is the interval
between the end of one poll sequence and the start of the next.
Poll interval (ms) should be filled in with a suitable interval between polling
sequences. Normally, this should be set to a reasonably high value such as 60000 (for
60 seconds). Note that this is a minimum time interval. The time might be longer than
this for two reasons:
•
the EM1500 is busy doing other things
•
packetization is in use, and a packet has been partially received
Summary of Contents for EM1500
Page 14: ...10 www rabbit com Introduction...
Page 22: ...18 www rabbit com Getting Started...
Page 76: ...72 www rabbit com EM1500 Configuration...
Page 90: ...86 www rabbit com EM1500 Specifications...
Page 104: ...100 www rabbit com Serial and TCP Protocols...
Page 118: ...114 www rabbit com EM1500 FAQ...