J
I'd like to use the Modbus Server Tester (version 0.1.5) for serial communication with a Modbus server (RTU).
The Modbus Server Tester (MST) can access and open the serial port (19200,8,E,1) without any problems. But I'm getting error messages when I attempt to read data (e.g. Input Register on address 0, qnt 1).
a) menu: <b>Tests -> Synchrone Request</b>:
First error message: <i>"Get Request Frame Error (0x9000)"</i>
Second error message right after the first one: <i>"Synchrone Request 4 Error (0xFFFF9000)"</i>
b) menu: <b>Tests -> Asynchrone Request</b>:
error message: <i>"Synchrone Request 4 Error (0xFFFF9000)"</i>
Trace-Log:
<pre>No Date Type Frame
1 Req 01 04 00 00 00 01
2 Req 01 04 00 00 00 01
...</pre>
I ran MST under Windows 7 and Windows XP. Even different compatibility modes like "Windows NT4.0 SP5" had no effect on the issue.
Other Modbus master simulation software do work without any problems (so I guess hardware, driver, Windows settings etc. seem to be okay).
Does someone have a clue?
Thanks in advance!
Julian
The Modbus Server Tester (MST) can access and open the serial port (19200,8,E,1) without any problems. But I'm getting error messages when I attempt to read data (e.g. Input Register on address 0, qnt 1).
a) menu: <b>Tests -> Synchrone Request</b>:
First error message: <i>"Get Request Frame Error (0x9000)"</i>
Second error message right after the first one: <i>"Synchrone Request 4 Error (0xFFFF9000)"</i>
b) menu: <b>Tests -> Asynchrone Request</b>:
error message: <i>"Synchrone Request 4 Error (0xFFFF9000)"</i>
Trace-Log:
<pre>No Date Type Frame
1 Req 01 04 00 00 00 01
2 Req 01 04 00 00 00 01
...</pre>
I ran MST under Windows 7 and Windows XP. Even different compatibility modes like "Windows NT4.0 SP5" had no effect on the issue.
Other Modbus master simulation software do work without any problems (so I guess hardware, driver, Windows settings etc. seem to be okay).
Does someone have a clue?
Thanks in advance!
Julian