Siemens SIMODRIVE POSMO A User Manual page 50

02.00 02.99
Bus termination The following must be taken into consideration for the bus termination
for PROFIBUS at the PROFIBUS–DP in connection with the "DP Slave POSMO A":
S
S
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SIMODRIVE POSMO A User Manual (POS1) – 08/2013 Edition
The terminating resistor must be switched–in at the first and last bus
nodes.
Is the "DP slave POSMO A" the first or last bus node?
– If yes?
––> The bus termination must be switched–in using switch S1
(refer to Table 2-2).
––> The bus termination that is switched–in is only
effective if the electronics power supply of the positioning
motor is switched–on and the connection cover is inserted.
– If no?
––> The bus termination must be switched–out using switch S1
(refer to Table 2-2).
If it must be possible, with bus communications still operational, to
power down the SIMODRIVE POSMO A positioning motor without
resulting in errors, then the following applies:
– This "DP slave POSMO A" may neither be used as the first nor
last bus node.
– For this "DP slave POSMO A", the bus termination must be
switched–out using switch S1 (refer to Table 2-2).
– Recommendation: Use an active bus terminating resistor
The "active RS485 terminating element" bus component has its
own 24 V supply voltage and can terminate the bus indepen-
dently of the DP slave.
Order No. (MLFB):
2 Installing and Connecting–Up
2.3 Connection and wiring overview
6ES7972–0DA00–0AA0
2
2-49