Bit 7 Bit 0
Bit 7-0 ES: External synchronization
00000000 = Position sampling during free running at the shortest cycle time.
All other values = Position sampling with the sync signal synchronized. The value from
ES determines the number of position samplings carried out in one sync cycle. The
user must match the number of samplings per cycle to the shortest frame length (see
chapter 7.3.3).
6.3.3 Quality monitoring
The MASTER_QM quality monitoring register contains the quality monitoring value for
the data connection.
As soon as the DSL Master detects events that indicate an improvement or degrad-
ation of the quality of the data connection, these events are indicated as values higher
or lower than the quality monitoring value (see table 21).
Table 21: Quality monitoring events
Protocol event Value change in quality moni‐
toring
Wrong synchronization in Safe Channel (last byte) -4
Wrong synchronization in Safe Channel (1
st
… 7
th
bytes) -6
RSSI <2 -4
Wrong encoding in parameter or SensorHub channels -1
Wrong encoding in process data channel -2
Unknown special characters in the protocol package -2
Any identified error in Safe Channel 1 -6
Any identified error in Safe Channel 2 -8
Correct synchronization in Safe Channel +1
Correct CRC value in Safe Channel +1
Quality monitoring is initiated with the value "8".
The maximum quality monitoring value is "15". This is the standard value during opera‐
tion.
NOTE
Particular attention must be paid to the quality monitoring value during the develop‐
ment of a DSL drive controller. If a value lower than "15" is indicated, the cause may be
a problem with the connection circuit, particularly if the value is continuously displayed.
If the quality monitoring value falls below "14", QMLW information is indicated in Online
Status and in the EVENT_L register.
If the quality monitoring value falls to "0", a forced reset of the protocol is carried out.
This is indicated by the PRST error bit in Online Status and in the EVENT_H register.
The MASTER_QM register is write protected.
Register 03h:
Quality monitoring register
R-0 X-0 X-0 X-0 R-0 R-0 R-0 R-0
LINK QM
Bit 7 Bit 0
REGISTER MAP 6
8017595/ZTW6/2018-01-15 | SICK T E C H N I C A L I N F O R M A T I O N | HIPERFACE DSL
®
35
Subject to change without notice
To Next Page
Loading...
