Page 20
Installation
optoNCDT ILR 1183
5.4.4
Slave Address
A Profibus address can be assigned, with due consideration of other participants in bus communications,
to any number from 0 to 125. The setting of an address can be achieved by triggering an SSA command via
the Profibus. For details on how to change a previously set slave address via the configuring tool, you should
consult the special tool documentation. In as-delivered state, the slave is set to the address “4”. A currently
set slave address is permanently stored in the EEPROM. It is also preserved in the event of a power failure.
Where more than one slave (ILR 1183) communicates via one Profibus, they must be connected in series and
each of them must be assigned a different address.
5.4.5
Bus Termination
For sensor operation, the bus must be fitted with an external terminator. 5 V supply voltage for bus termina-
tion can be drawn from the male connector Profibus-OUT. This voltage is electrically isolated from actual
operating voltage supply (VCC) and provides 100 mA current load capacity. The terminating network is avail-
able as an optional accessory.
5.4.6
Baud Rate
The sensor is prepared to automatically detect any of the following baud rates: 9.6 / 19.2 / 93.75 / 187.5 / 500
kbaud and 1.5 / 3 / 6 / 12 MBaud, respectively.
5.4.7
Segment Length
The maximum segment length between two Profibus participants depends on the selected Baudrate. Ob-
serve the following segment lengths:
Baud rate
Segment length
9.6 ... 93.75 kBaud
1200 m
187.5 kBaud
1000 m
500 kBaud
400 m
1.5 MBaud
200 m
3 ... 12 MBaud
100 m
Use cable of type A for cabling in accordance with these segmenting limits. This cable type provides the fol-
lowing characteristics:
- Surge impedance 135 ... 165 OhmW
-
Capacitance per unit length ≤ 30 pf/m
Summary of Contents for optoNCDT ILR 1183
Page 6: ...optoNCDT ILR 1183...
Page 47: ......
