User manual

M
MCP250XX USER’S GUIDE
 2004 Microchip Technology Inc. DS51266C-page 13
Chapter 2. MCP250XX Basic View Tutorial
2.1 INTRODUCTION
This tutorial discusses the evaluation portion of the kit, details the demonstration soft-
ware (Basic template), CAN system (PC Node and Node B) and covers the steps
required to successfully run the demonstration network.
The user defaults for Node B are preprogrammed at the factory. Therefore, no user
default programming is necessary. No discussion of programming user defaults will
take place in this chapter, as this is detailed in Chapter 4. “Programming the
MCP250XX User Defaults”.
2.2 HIGHLIGHTS
This chapter covers the following topics:
• Setting up Evaluation mode
• Establishing communications
• Explaining the CAN messages
2.3 SETTING UP THE BASIC TEMPLATE EVALUATION MODE
The MCP250XX Development Kit’s “Basic” template contains the following major
elements:
1. Menu Bar (Figure 2-1) – The layout is typical of most Windows menu bars.
2. PC Node Bit Timing and Mode (Figure 2-2) – The bit timing and the mode of
operation (Normal and Configuration) for the MCP2515 (PC Node) are
configured with this window.
3. Board Status (Figure 2-3) – Indicates if the board is connected to the PC and
also indicates the parallel port address used.
4. Message Format Window (Figure 2-4) – Selects how CAN messages are
formatted and interpreted. The default is “Standard Text Format” and is used for
the demonstration program. The other format is used with the CAN Kingdom
higher layer protocol.
5. Bus Monitor Window (Figure 2-5) – Also known as the “Output” window. This
window shows all bus traffic.
6. MCP250XX Demonstration (Figure 2-6) – This window is the graphical
interpretation of Node B (the demonstration node).
FIGURE 2-1: MENU BAR
Note: The software must be installed and the hardware connected to run the
demonstration program.