5
Clearing Faults from the Block/Bus Status Screen
Pressing the CLEAR key from this screen clears all faults on the active device. For Genius blocks, if you want to clear a specific circuit fault, select F2 (Monitor/Control Reference) from the Analyze menu instead.
Block/Bus Status Display for a Bus Controller
If the active device is a bus controller, the Block/Bus Status display shows information appropriate to that bus controller type. For example:
S E R I E S 6
B U S A D R : (device #)(vers)
R E G (registers)
n x t p r v r / g b u s
The first line identifies the bus controller type. If it is a Series Five bus controller, PCIM, or QBIM, the first line indicates:
G E N I
The second line of the display shows the bus controller's Device Number followed by its firmware revision level.
Reading a Global Data Address
The third line of a bus controller'sBlock/BusStatus screen shows its assigned Global Data address.
If no Global Data address appears, it means that either:
HThe bus controller has no Global Data address.
HA Series
If a Global Data address has been set up, you can use the F3 (R/G) key to toggle between (R)egister and (G)lobal memory format. If no Global Data reference has been set up, the F3 key is not assigned.
Monitoring the Bus Status
To display the number of devices currently operating on the bus, and the current bus scan time, select F4 (Bus) from the Block/Bus Status display.
S E R I A L B U S S T A T S
A C T V | D E V I C E S = | 7 |
S C A N | T I M E 1 O m s |
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The bus scan time shown is rounded down to the nearest millisecond (10mS represents 10.01 to 10.99mS).
Switching a Dual Bus
To force a bus switch in a redundant bus system, the HHM must be connected to the same bus as the
1.If necessary, make the BSM Controller the ac- tive device.
A.From the Analyze menu, select F3 (Block/ Bus Status).
B.Press F1 (Next) or F2 (Previous), to reach the status screen for the BSM Controller.
C.When it appears, press F3 (Active) to make the BSM Controller the active device.
2.Press D MENU to return to the Analyze menu.
3.From the Analyze menu, select F2 (Monitor/ Control Reference). The HHM shows the ac- tive bus and whether it is forced. For example:
M N T R / C T R L (input ref)
S T A T E : B U S B F R C
> b u s A b i s B r e l s
4.Press F2 or F3 to select the other bus. The LED on the BSM is off when bus A is selected and on when bus B is selected. The I/O Enabled LED on each block on the active bus blinks.
Chapter 5 Monitoring the Bus and its Devices |