Matrix Switching System—Instruction Manual

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APPENDIX – Matrix Switch Communication Protocol

The RS-232/RS-485 communications are half-duplex with variable byte count packets. For RS-232, the matrix switch operates as a DCE device and therefore can be connected using a straight cable to a DTE device such as a computer. The RS-232 connector is a DB-9 female. For RS-485, a discrete wiring connector is provided for custom connection to any RS-485 equipment. For full details on connecting to the matrix switch refer to the User Manual.

Default Communication Settings – 9600, N, 8, 1

Baud Rate

9600

Parity

None

Data Bits

8

Stop Bits

1

DIP Switch Description

SW1-SW5: Machine ID (address) 0=ON, 1=OFF

SW1

SW2

SW3

SW4

SW5

Notes

 

 

 

 

 

 

 

0

0

0

0

0

Address for RS-232/RS-485 Master only

0

0

0

0

1

Addresses for Slave devices

~

~

~

~

~

1

1

1

1

1

 

SW6-SW7: RS-485 TX/RX Terminating Resistor

0=ON, 1=OFF

 

 

 

 

SW6

SW7

Notes

 

 

 

0

0

Resistor ON

1

1

Resistor OFF

1

0

Invalid

0

1

Invalid

SW8: RS-232/RS-485 Master or RS-485 Slave 0=ON, 1=OFF

SW8

Notes

0RS-485 Slave Device

1RS-232/RS-485 Master

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Image 29
Cable Electronics SW404HD manual Appendix Matrix Switch Communication Protocol, Default Communication Settings 9600, N, 8

SW404HD, SW808HD specifications

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