CodeBanger
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I have 2 computers in which the serial port does not work over Modbus. One of them is a laptop and one is a regular PC. Other computers work fine. I use the same cable, same 984 device and try communication from both Windows 95 and from the dos prompt. I suspect it is something to do with the UART type. Does anyone know why this would be. Thanks in advance. -
Tried runing it from Dos but still get error 14. I'm trying to download a new program. Is there any quirks with doing that? -
I have a 984 385E I'm trying to communicate with. I was getting error 120 "bad checksum". I believe that was a cable error. I'm now getting error 114, "Unexpected address/function code recieved" I'm using modsoft 2.31 on Windows 95 My cable is 1-n.c., 2-3, 3-2, 4&6 jumpered, 5-5, 7&8 jumpered, 9 n.c. I have the dip switches set as the manual and modsoft describe. I don't find a Modbus port 1 toggle switch on the 385E. Serial Port is set to 9600 baud, 8 bit, even parity, 1 stop, flow control None. Modsoft is set to address (tried ) 1 and 2 etc., RTU, 8 bit, even, 1 stop, 9600 baud, com1 I'm sure there are many out there that have gone thru this. Is there an easy solution? (Laugh) Is there a document that describes the error codes and solutions?
Modbus - Serial Port UART
in Modicon / Telemecanique / Schneider Electric
Posted