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10.2.2 Detailed description of the bits (input byte 0)
Bit 2: Service mode active: SMA
Input data
SMA
Bit 5: Data loss: DL
This bit is important for monitoring data transmission in Transparent and Collective mode.
Input data
DL
Bit 7: New data: ND
This bit is only relevant in Transparent mode.
Input data
ND
10.2.3 Detailed description of the bits (input byte 1)
Bit 0 ... 7: Data length code: DLC0 ... DLC7
Input data
DLC0 ... DLC7
46
Description
Service mode active (SMA)
The SMA bit is set if the service switch is set to "MA" or
"DEV", i.e. if the device is in either fieldbus gateway or Leuze
device service mode. This is also indicated by a flashing PWR
LED on the front side of the device. Upon changing to the
normal operating mode "RUN", the bit is reset.
Description
Data loss
(Data transmission monitoring)
This bit is set if gateway data could not be sent to the PLC
and were lost. Furthermore, this bit is set in case the config-
ured data frame, e.g. 8 bit, should be smaller than the data
to be transmitted to the PLC, e.g. bar code with 20 digits. In
this case, the first 8 digits are transmitted to the PLC, the rest
are truncated and are lost. In this process, the Data loss bit
is also set.
Description
New data
(new data)
This bit is toggled on each data set that is sent from the gate-
way to the PLC. This can be used to differentiate between
multiple, identical data sets that are sent to the PLC.
Description
Data length code
(number of user data in bytes)
Stored in these bits is the number of user data bytes trans-
mitted to the PLC which follow.
Addr. Data
0.2
Addr. Data
0.6
Addr. Data
0.7
Addr. Data
1.0 ...
1.7
MA
208i
Value range
type
0: Device in
operating mode
Bit
1: Device in service
mode
Value range
type
0->1:
Bit
Data loss
Value range
type
0->1; 1->0:
Bit
On each status
change for new data
Value range
type
) ...
1
(00001
h
b
Bit
FF
(00255
)
h
b
Leuze electronic
Default
0h
Default
0
Default
0
Default
0h (00000b)
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