Advantech APAX-5070, User Manual

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5 APAX-5070 User Manual
Chapter 1
O
verview
1.3.4 Data Stream
In many applications, host PC needs to regularly request the I/O devices via TCP/IP
packs to update current data. It may cause data collision and lower performance on
the network, especially when there are frequent communication between multi-serv-
ers and I/O devices. To reduce the communication loading of the host computer on
your Ethernet network, APAX-5070 supports UDP (User Datagram Protocol) protocol
to send the data packs to specific IP without requesting commands.
One application for this protocol is Data Stream functionality. Enabling Data Stream
functionality will make APAX-5070 periodically and actively send data to specific
device. User can write a program to receive and analyze the data on that device.
Refer to the APAX-5070 Software Manual for how to configure Data Stream function-
ality in APAX utility.
1.3.5 Alarm
There are 16 alarms available on one APAX-5070 module. User can define each
alarm according to the connected APAX-5000 I/O modules' I/O value. Besides, user
can define a specific output module to change its output value when an alarm is hap-
pening. All alarm configurations can be done by APAX utility or .NET class libraries.
Refer to the APAX-5070 Software Manual for how to configure alarm functionality in
APAX utility.
1.3.6 Fixed or Flexible Modbus Address Mapping
Two options that user can choose for how to define the Modbus/TCP address are
available: Fixed and Flexible. User can decide and configure it in utility. Refer to
APAX-5070 Software Manual for corresponding configuration. Fixed setting means
the Modbus address will be automatically assigned. Flexible setting means user can
manually define the Modbus address mapping. One brief advantage for Flexible set-
ting is to shorten the data package, making the data transmission speed faster.