RS-485 communication problem with a new PR60-72 batch

Hardware
1

Hi we have a communication problem with our new relay boards using Base Station.

Cannot communicating with them, we tried to swap the new board for an old one (bought 1-2 years ago), while keeping the same (new) RS-485 module (same jumper conf and same 9600 baudrate).
It worked with this one.
So we have the same laptop/software, the same RS-485 module, just changing the PR60-72 relay board, and with the new batch (2 boards tested) it does not communicate, Base Station cannot connect, tries every baudrate possible (“The controller did not respond to the baud rate you selected. Searching other baud rates…”) and then exits.

What did change on those boards ? Why aren’t them compatible ?
What can I do to communicate with my boards?

Thanks

Board ref:
PR60-72_ZADSR321DPDTPROXR_PLUGGABLE Industrial Relay Controller 32-Channel DPDT + 8-Channel ADC

PR37-9 RS-485 Node Serial Network Communications Module SN65HVD12D
PR60-54_XR321DPDT_PLUGGABLE XR Expansion 32 Channel DPDT Signal Relay Controller

2

Hi, the relay board default baudrate is 115200

3

RS-485 Node module is set at 9600, that’s my baudrate setting on Base Station.
According to RS485 quick guide, module output is “Node modules communicate to the host device at 57.6k baud by default”
So if I can’t get through it, I can’t talk to the board to update this baudrate. What are we missing?
Thanks

4

you will need to set the relay board baudrate to 57600
using this

5

We don’t remember us having to do this last time.
So how do we reconfigure RS485 node module to 115200 in that case?
Thanks

6

if you bought the relay board and RS485 together then we did ti before shipping
RS485 does not work at 115200

7

We did buy them together, however due to a shortage of RS-485 node modules, they were delivered separately.

So the RS-485 node module has an input RS-485 baudrate of 9600, and an output USART baudrate set at 57600.
And the relay board USART input baudrate is 115200.

Can we send the F3, 00, E1, 00 command to the node module to set it at 115200, then reconfigure the relay board through it to 57600, and reset the node to 57000?

8

yes you can try changing the baud rate, i should mention its not well tested. the max tested baudrate is 57600.

9

It works now. We configured RS485 USART to 115k, to communicate with the board and set it at 57.6k, then reconfigured the RS485 USART at 57.6k too.
Thanks for the support.

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