Hardware Manual COMBILOG 1020
100
10.9 Potential Equalization
The difference between the actual physical voltage potentials
DGND of all connections with the bus must not exceed ±7 Volt.
If this cannot be guaranteed, an equalization has to be provided.
For most of the connections this means that the minus connec-
tion of the power supply has to be fed-through as a compensating
line from connection to connection.
10.10 Adjustment of Address and Baud Rate
Before a control unit (PLC) or a computer (PC) can interchange
data with a datalogger via the bus, address and baud rate for the
datalogger have to be defined. Following hints have to be consid-
ered:
All devices have to be adjusted to the same baud rate.
Within the bus topology the same address must not appear
twice.
The setting variants for the bus parameters for the datalogger
COMBILOG 1020
are:
bus parameter
ASCII-protocol
PROFIBUS-protocol
address
1 ..... 127
1 ..... 126
2,400 bps
-
baud rate
4,800 bps
-
9,600 bps
9,600 bps
19,200 bps
19,200 bps
38,400
bps
-
Table 10.3 Setting variants for address and baud rate
for the datalogger COMBILOG 1020
Summary of Contents for COMBILOG 1020
Page 1: ...COMBILOG 1020 Datalogger Hardware Manual Version 3 09...
Page 2: ...Hardware Manual COMBILOG 1020 2 Issue 03 11 2005 Technical data are subject to change...
Page 4: ...Hardware Manual COMBILOG 1020 4...
Page 6: ...Hardware Manual COMBILOG 1020 6...
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Page 86: ...Hardware Manual COMBILOG 1020 86 Bild 8 1 Example Master Slave System...
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