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Communication via SINEC L1 LAN
S5-90U/S5-95U
14.1
Connection of the Programmable Controllers to the L1 Bus Cable
Bus terminal BT 777 is the signal level converter that connects the programmable controller to the
L1 bus cable. The procedure is as follows:
Connect the L1 bus cable to bus terminal BT 777, as shown in the figure below.
Figure 14-2. Connection of the Bus Cable
0B
1B
2B
3B
4B
0B
1B
2B
3B
4B
0B
1B
2B
3B
4B
0A
1A
2A
3A
4A
0A
1A
2A
3A
4A
0A
1A
2A
3A
4A
Connection of the S5-90U:
The current required for bus terminals BT 777-0BB01 or BT 777-0BC01 is supplied by the S5-90U.
External supply of the bus terminal is not required.
All other BT 777 bus terminals must be supplied with 5 V DC (terminal C=+5 V; 5.0 to 5.3 V;
0.3 A; terminal D=ground). The following note applies to bus terminals with an external supply:
Note
Refer to the section "Bus Terminals for non-Siemens Nodes" in the SINEC L1
manual,
beginning with Version 5, Section 1.3.4. If there is a power failure with the S5-90U, the
5-V supply to the bus terminals must be turned off, otherwise no other bus functions
are possible.
Plug the connector of the bus terminal cable onto the programmer port of the programmable
controller.
Connection of the S5-95U:
On the S5-95U the bus terminal is supplied by the programmer port. An external supply for the bus
terminal is not required.
Plug connector of the bus terminal cable onto the programmer port of the programmable
controller.
14-2
EWA 4NEB 812 6115-02b
Содержание SIMATIC S5-90U
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