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| == Modbus Control commands for R6: ==
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| This commands give you the possibility to control the relays on a R6 extension module via a modbus command send as a hex-file in a tcp stack.
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| It is easy to connect the R6 module to a Barix device with a RS485 interface. You have to wire Pin6 (A) and Pin9 (B) of the DB9 connector to Pin2 (A) and Pin3 (B) of the J1 connector on the R6.
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| Additional you have to power up the R6 on Pin4 (+) and Pin5 (-) with an external power supply.
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| The serial settings for the RS485 interface (Serial 2) in the device must set to 19200 Bd, 8E1 (8 Databit, parity=even, 1 Stopbit), Handshake to RS485 direction control and local port to 502.
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| Now it is possible to send a hex-file, which includes the modbus command, via tcp to port 502 of the device. This can be done with the NetCat Application.
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| {| class="wikitable"
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| |-
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| !
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| !
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| ! Modbusaddress! Single Coil! Address Hi! Address Lo! Value Hi! Value Lo! CRC Lo! CRC Hi
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| | -
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| | Relay 1| Set| 00| 05| 00| 00| FF| FF| CD| AB
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| | -
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| | | Reset| 00| 05| 00| 00| 00| 00| CC| 1B
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| | -
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| | Relay 2| Set| 00| 05| 00| 01| FF| FF| 9C| 6B
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| | -
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| | | Reset| 00| 05| 00| 01| 00| 00| 9D| DB
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| | -
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| | Relay 3| Set | 00| 05| 00| 02| FF| FF| 6C| 6B
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| | -
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| | | Reset| 00| 05| 00| 02| 00| 00| 6D| DB
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| | -
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| | Relay 4| Set | 00| 05| 00| 03| FF| FF| 3D| AB
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| | -
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| | | Reset| 00| 05| 00| 03| 00| 00| 3C| 1B
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| | -
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| | Relay 5| Set | 00| 05| 00| 04| FF| FF| 8C| 6A
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| | -
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| | | Reset| 00| 05| 00| 04| 00| 00| 8D| DA
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| | -
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| | Relay 6| Set | 00| 05| 00| 05| FF| FF| DD| AA
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| | -
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| | | Reset| 00| 05| 00| 05| 00| 00| DC| 1A
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| | -
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| |}
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| Please note: It is necessary to calculate a crc-check-sum for each command and add it to the command itself.
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| Here you can find a online crc-calculator:
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| [http://www.lammertbies.nl/comm/info/crc-calculation.html http://www.lammertbies.nl/comm/info/crc-calculation.html]
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