Echelon i.LON SmartServer 2.0 - Manual (Page 276)

i.LON SmartServer 2.0 Programmer’s Reference 16-9
Property Description
received from the device. The device answers to a
REQ_UD-request with toggled FCB-Bit with a set FCV-bit
from the SmartServer with a RSP_UD containing the data
telegram section of a multi-telegram answer.
Notes: An M-Bus device with a single RSP_UD-telegram may
ignore the FCB in the REQ_UD2-telegram and always send the
same (single) telegram.
An M-Bus device with exactly two (sequential)
RSP_UD-answer telegrams may use the FCB of the REQ_UD2
to decide which of both telegrams should be transmitted.
The communication mode for the requested device. This
property may be one of the following values:
• MD_MODE1
• MD_MODE2
The device’s medium ID as a 1-byte enumeration that identifies
the device functionality. This read-only property is filled when
the device responds to a request correctly. The following is a
list of possible medium IDs:
MED_NUL Invalid
MED_OTH ER
Others
MED_OIL Oil
MED_ELECTRICITY Electricity
MED_GAS Gas
MED_RETURN_TEMP Return temperature
MED_STEAM Steam
MED_HOT_WATER Hot
water
MED_WATER Water
MED_HEAT_METER Heat
meter
MED_COMPRESSED_AIR Compressed-air
MED_RES1 Reserved
MED_RES2 Reserved
MED_FLOW_TEMP
Flow temperature,
outgoing/supply temperature
MED_RES3 Reserved
MED_SYS_BUS
System / Bus
MED_UNKNOWN Unknown
The device’s manufacturer ID as a 3-byte string. This read-only
property is filled when the device responds to a request
correctly.
The generation or version of the device as 1-byte char. This
read-only property is filled when the device responds to a
request correctly. The value depends on the manufacturer.
This element contains the following options for M-Bus devices:
• . Specifies whether the M-Bus
device uses primary (AT_PRIMARY) or secondary