Dear Codesys support,
I have a communication problem with a card (Olimpia Splendid B0372) through the modbus protocol.
The card works with this setting: modbus ascii, baud 9600, data bits 7, stop bit 1, even parity. By setting this conditions with codesys, I can't communicate.
I bought a gateway, which allows storage between modbus ascii and modbus rtu (ICP DAS TSH-735), through which I can set up a communication, even if the device
does not respond correctly in writing (while in reading I have no problems). The card has three registers, at addresses 101, 102 and 103. The operating mode is shown in the datasheet that I send in the attachment (in which it is written that it is necessary to write the registers 101, 102, 103 in sequence).
In register 101 I can't write anything, while when I go to write in registers 102 and 103, whatever I write, it always inserts the value 0.
I also tried to write individually in each register, but the situation does not change compared to what I reported above.
By trying, however, with a modbus test software installed on the computer (Modbus Poll), I can write on the registers.
Can you advise me how to solve the problem?
Thanks
Dear Codesys support,
I have a communication problem with a card (Olimpia Splendid B0372) through the modbus protocol.
The card works with this setting: modbus ascii, baud 9600, data bits 7, stop bit 1, even parity. By setting this conditions with codesys, I can't communicate.
I bought a gateway, which allows storage between modbus ascii and modbus rtu (ICP DAS TSH-735), through which I can set up a communication, even if the device
does not respond correctly in writing (while in reading I have no problems). The card has three registers, at addresses 101, 102 and 103. The operating mode is shown in the datasheet that I send in the attachment (in which it is written that it is necessary to write the registers 101, 102, 103 in sequence).
In register 101 I can't write anything, while when I go to write in registers 102 and 103, whatever I write, it always inserts the value 0.
I also tried to write individually in each register, but the situation does not change compared to what I reported above.
By trying, however, with a modbus test software installed on the computer (Modbus Poll), I can write on the registers.
Can you advise me how to solve the problem?
Thanks