3.2.3 Profibus interface
Please refer to the Operating Instructions 17200049.
3.2.4 RS 485 interface
Standards ISO/IEC 8482, EIA 485
Protocol acc. to VDI/VDE 3689
Transmission rate 19200 baud fixed
Response delay default setting 10 ms
(parameter 180)
Address range 0 ... 15
Max. cable length 50 m (with bus termination)
Type of cable 2 wire twisted pair
(twisted pair cable)
Differential voltage levels logic „0“:
(see also “Standards”) transmitter: 1.5 ... 5 V
receiver: > 0.3 V
logic „1“:
transmitter: - 1,5 ... - 5 V
receiver:≤-0,3V
Interface connector 9 way Sub-D type,
socket on the instrument (male)
thread UNC4-40
Note: After having changed the bus address through the rotary switch, the
frequency converter must be switched off (yellow power LED off) and then on
again so as to enable the new address setting.
For further information please refer to the Operating Instructions 17200048.
Operation
18
7
8
9
1
2
3
4
5
6
TxD/RxD +
TxD/RxD –
0,5 A, 24 V DC
Fig. 3.5 Pin assignment for the socket at the frequency converter for RS 485 interface (male)
Links for activation of
the bus terminator
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