Installing/Mounting
4.4 Connecting a CU240S via USS
Control Units CU240S
Operating Instructions, 11/2006, A5E00766042B AA
4-17
4.4 Connecting a CU240S via USS
RS485 Interface
The built-in connector is a 9-way SUB-D female connector for RS485.
Table 4-5 9-way SUB-D connector for RS485
Pin Signal (drive side) Comment
1 Screen Potential equilisation
2 - Unused
3 RS485P Receive- and transmit signal (+)
4 - Unused
5 0 V Ground reference
6 5 V Supply voltage (output from drive or provided to drive from external)
7 - Unused
8 RS485N Receive- and transmit signal (-)
9 - Unused
X Screen (casing) Potential equilisation
The following connectors can be used for USS connection. Via the switches on the
connectors the RS485 termination can be activated.
Table 4-6 Recommended PROFIBUS connectors
Order Number 6GK1 500-0FC00 6GK1 500-0EA02
PG socket No No
Max. baud rate 12 Mbaud 12 Mbaud
Terminating resistor On/Off switch On/Off switch
Outgoing cable unit 180° 180°
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