SYSTEM SETUP
2-8
Pamux User’s Guide
To terminate a B4 station, plug a Pamux bus terminator board (TERM1 or TERM2) into either connector
on the I/O mounting rack. When the terminator board is installed correctly, its component side faces
away from the I/O modules and its red wire connects to the +5V terminal on the rack.
Figure 2-9 illustrates the proper installation of the terminator board.
Figure 2-9: Terminator Board Installed on a B4-Compatible Mounting Rack
B4 LED INDICATORS
The B4 brain board includes the following LEDs:
•
Select (Address)
— This LED is on whenever the brain board is addressed (read from or
written to) on the Pamux bus. It is off otherwise. For each operation the LED stays on for about
250 msec, so if the bus is very active the LED may appear constantly on.
•
Watchdog
— This LED stays on if the Pamux bus is idle (no strobe is present) for more than
1.2 seconds. It is off otherwise. Note that unlike the Select LED, this LED monitors overall bus
activity.
Содержание PAMUX
Страница 10: ...TABLE OF CONTENTS x Pamux User s Guide...
Страница 14: ...TABLE OF CONTENTS xiv Pamux User s Guide...
Страница 103: ...PROGRAMING WITH THE PAMUX DRIVER 3 42 Pamux User s Guide...
Страница 121: ...PROGRAMING WITHOUT THE PAMUX DRIVER 4 18 Pamux User s Guide...
Страница 125: ...TROUBLESHOOTING AND TIPS A 4 A 4 A 4 A 4 A 4 Pamux User s Guide...
Страница 135: ...SPECIFICATIONS B 10 Pamux User s Guide...
Страница 141: ...TEMPERATURE CONVERSIONS ROUTINES C 6 Pamux User s Guide...
Страница 143: ...PRODUCT SUPPORT D 2 Pamux User s Guide...
Страница 149: ...GLOSSARY E 6 Pamux User s Guide...