Serial Communications Support
Serial Communications Technical Manual
A short manual covering
the basic fundamentals of serial communications.
RC900 Data Communications Manual (98fe_a.pdf)
A comprehensive manual covering
the basic fundamentals of serial communications for the RC900 (981S).
Troubleshoot RC900 Serial 232 Data Communications
PowerPoint
A short PowerPoint presentation covering basic fundamentals of the serial communications
hardware & software set-up for the RC900 (981S) controller.
Free Power Point 2003 Viewer Utility
(1.86MB)
A free PowerPoint viewer software utility program for viewing PPT
presentations downloaded from this web site.
Comm7 Utility Software (2.6M)
Comm7 is a Windows-based diagnostic utility created by
Watlow. Comm7
can be used to upload/download controller configurations or log data to a text
file via RS-232.
(Windows 3.x/95/98/XP).
You can also download an older version, Comm6
HERE
MBReader2 is a very simple Windows-based diagnostic utility created by Watlow. MBReader2 can be used as a digital communications diagnostic tool for dual packet (handles floating point data) Modbus RTU protocol instruments like the model PM controller.
ModbusTest is a powerful Windows-based diagnostic utility created by Watlow. ModbusTest can be used as a digital communications diagnostic tool for dual packet (handles floating point data) Modbus RTU protocol instruments like the model PM controller.
Modbus Protocol Reference Guide
An introduction to Modbus RTU serial communications protocol.
Modbus RTU Protocol Programming in Visual
Basic (Self-Extract Zip File 61 KB)
The Modbus Communications Example demonstrates the sort of routines
necessary to communicate to a temperature controller through the Modbus
protocol using a program written in Visual Basic.