RS485 interface with PSOC1

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chmoc_1567941
Level 4
Level 4

how can i make RS485 interface with PSOC1???

   

is that any related appnote or project available???

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rola_264706
Level 8
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        Yes but you will need to add the chip and the required power supply for that chip.   

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Bob_Marlowe
Level 10
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There is no appnote, but you can use the UART and an additional pin for hardware Tx enable. External drivers will be needed.

   

 

   

Bob

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rola_264706
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        They have IC's that performs this function. Do a Internet search for Rs485 devices.   
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rola_264706
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Here is a data sheet on one of the IC's

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chmoc_1567941
Level 4
Level 4

can i use max485 for same interface with psco1?

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rola_264706
Level 8
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        Yes but you will need to add the chip and the required power supply for that chip.   
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rola_264706
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        Some of the chips run off a single 5v source and will drive a serial buss.   
chmoc_1567941
Level 4
Level 4

i have been reading on RS485. it need one master and one slave device. but can i use PC as master ?????

   

if yes than what kind of device i have to attach with pc to make it master???

   

is that USB to RS485 convertor???

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Bob_Marlowe
Level 10
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You do not need a master or a slave. RS485 defines a serial interface and its electrical specifications. In a peer-to-peer connection there are exactly two devices connected. Each device may send and receive data.

   

An RS485-USB converter will help you, the PSoC is connected with the interface chip to the 485 and the UART is plugged into the pc. Probably there will be an emulated COM-port on the PC side which you can see using PuTTY terminal emulation.

   

 

   

Bob

chmoc_1567941
Level 4
Level 4

Thank you  bob!!

   

i want to use MODBUS on RS485 ???

   

how can  i do it??

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