Introduction
Parameter
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Parameter
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Keypad and
display
Serial
communications
CT Modbus
RTU
PLC Ladder
programming
CTSoft Menu 0
Advanced parameter
descriptions
Commander SK Advanced User Guide 13
Issue Number: 9 www.controltechniques.com
The following table shows the pin functions for the RJ45 connector on the Commander SK control PCB:
Table 5-2 Commander SK RJ45 pin functions
The TX Enable\ is a 0 to +5V output signal from the drive that can be used to control the buffers on an external serial communications converter.
The following table shows the pin functions for the RJ45 connector on the Commander SK Keypad Remote
Table 5-3 Commander SK Keypad Remote RJ45 pin functions
* See Chapter 5.2.3 Terminating resistors on page 14 for information on terminating resistors.
The following table shows the pin functions for the RJ45 connector on the SM-Keypad Plus:
Table 5-4 SM-Keypad Plus RJ45 pin functions
When using CT Comms cable, the available baud rate is limited to 19.2kbaud.
5.2.2 Multi-drop converters
Multi-drop converters are available from the following suppliers:
• Amplicon Magic 485F25 or Magic 485F9
(485F25 refers to a 25-way D-type connector and 485F9 refers to a 9-way D-type connector)
www.amplicon.co.uk
E-mail: support@amplicon.co.uk
• Westermo MA44
www.westermo.dircon.co.uk
E-mail: sales@westermo.co.uk
EIA485
RJ45 connector
Pin function
1
Connection for built in EIA485 termination resistor
(120Ω). Connect to pin 8 if termination is required *
2 RXTX (2-wire EIA485 +)
30V
4 +24V (±15%) 100mA supply for options
5 Not connected
6 TX Enable
7 RXTX\ (2-wire EIA485 -)
8
Connection for built in EIA485 termination resistor
(120Ω). Connect to pin 1 if termination is required *
EIA485
RJ45 connector
Pin function
1
Connection for built in EIA485 termination resistor
(120Ω). Connect to pin 8 if termination is required *
2 RXTX (2-wire EIA485 +)
30V
4 +24 supply to keypad
50V
6 Not connected
7 RXTX\ (2-wire EIA485 -)
8
Connection for built in EIA485 termination resistor
(120Ω). Connect to pin 1 if termination is required *
EIA485
RJ45 connector
Pin function
1 Not connected
2 RXTX (2-wire EIA485 +)
30V
4 +24V supply to keypad
50V
6 TX Enable
7 RXTX\ (2-wire EIA485 -)
8 Not connected
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