RACOM MG102i, Руководство по эксплуатации

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IEC 870-5-101
IEC 870-5-101 is a serial polling-type communication protocol used by Master–Slave application.
More IEC 870-5-101 Masters can be used within one network and one Slave can be polled by more
Masters.
IEC 870-5-101 protocol configuration is using all parameters described in
Common parameters .
Mode of Connected device
Master
Broadcast - only On, Off. Protocol broadcast address is not configurable, it is defined
by Address mode in Advance parameter (default 0xFF), but broadcasting is not al-
lowed within mobile networks.
Address translation
Table
Mask
Slave
Broadcast accept
• Advanced parameters
○ Address mode
Even if IEC 870-5-101 is the standard, there are some users who have customized this standard
according to their needs. If addressed byte has been moved, M!DGE/MG102i/RipEX has to read
it at the correct frame position.
■
IEC101
Address byte location according to IEC 870-5-101 standard.
Broadcast from Master station is generated when address byte is 0xFF.
■ 2B ADDR
Two byte address (IEC 870-5-101 standard is 1 byte). The frame is 1 byte longer than the
standard one. There is the Intel sequence of bytes: low byte, high byte. Mask Address
translation has to be used, because Table one is limited to just one byte address length.
The Master station broadcast is generated when the low address byte is 0xFF and high ad-
dress byte is also 0xFF.
■ TELEGYR
The Control byte in the standard IEC packet is omitted. The frame is 1 byte shorter than a
standard one. This is typically used in the Telegyr 805/809 protocol.
Broadcast from Master station broadcast is generated when the address byte is 0x00.
■ SINAUT
The sequence of Address byte and Control byte in the frame is swapped-over.
Master station broadcast is generated when the address byte is 0x00.
ITT Flygt
ITT Flygt is a serial polling-type communication protocol used in Master–Slave applications.
ITT Flygt protocol configuration uses all parameters described in Common parameters .
Mode of Connected device
Master
Broadcast
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