RACOM M!DGE3, Руководство пользователя

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7.1.2.3.14. UNI
UNI is the 'Universal' protocol utility designed for M!DGE3. It is supposed to be used when the required
application protocol is not available in M!DGE3 and the network communication is using addressed
mode (which is a typical scenario). The key prerequisite is: messages generated by the Master applic-
ation device must always contain the respective Slave address and the address position, relative to
the beginning of the message (packet, frame), is always the same (
Address position ). Generally, two
communication modes are typical for UNI protocol: In the first one, communication is always initiated
by the Master and only one response to a request is supported; in the second mode, Master-Master
communication or combination of UNI protocol with ASYNC LINK protocol and spontaneous packets
generation on remote sites are possible.
The UNI protocol is fully transparent, i.e. all messages are transported and delivered without any
modifications.
Mode of Connected device
List box: {Master, Slave}, default = Master
Adress mode
List box {Binary (1B); ASCII (2B); Binary (2B LSB first); Binary (2B MSB first)}, default = "Binary
(1B)"
Protocol address format and length (in Bytes). ASCII 2-Byte format is read as 2-character hexa-
decimal representation of one-byte value. E.g. ASCII characters AB are read as 0xAB hex (10101011
binary, 171 decimal) value (the ASCII-2-Byte format function will be available in a future FW release).
Address position
Number {1 – 255}, default = 1
Specify the sequence number of the byte, where the Protocol address starts. Note that the first
byte in the packet has the sequence number 1, not 0
Poll response control
List box {On; Off}, default = "On"
"On" – The Master accepts only one response per a request and it must come from the specific
remote to which the request has been sent. All other packets are discarded. This applies to the
Master - Slave communication scheme.
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