CodeBanger

Thank you for the replies. The software I'm using is Modsoft 2.62 to connect to a 984 device and XBT-L1000 with XBT L1MOD01 driver to connect to a Magelis P022010. I've heard that laptops can be a problem. The laptop in question runs Windows 98. What is curious is that the desktop that runs Windows 95 also does not want to connect. I have tried to connect both computers from Dos mode. The laptop is an IBM thinkpad 600e. I've done the Bios upgrade. I will try the suggestions and let everyone know what happens.

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?