Socket Mobile GFK0121E - Manual (Page 53)

5
5-17 GFK-0121E
Chapter 5 Monitoring the Bus and its Devices
Pulse Testing Outputs on Discrete Genius Blocks
Pulse Testing verifies the ability of outputs on a
discrete block to change state. Pulse Testing also
indicates whether output circuits (wires, power
sources, loads) will start or stop current flow.
Pulse testing is recommended for blocks
controlling outputs that seldom change state. It
provides assurance that when needed, an output
will operate correctly. Blocks that control outputs
which frequently change state do not need to use
the Pulse Test feature. Pulse Testing does not
provide enough energy to activate mechanical
devices such as motor starters, relays, or solenoid
valves, but it may change the state of a very small
load.
Executing a Pulse Test
(To execute a Pulse Test, the Hand-held Monitor’s
PULSE TEST capability must be enabled). The
block being Pulse Tested must be the active block.
1. From the Analyze menu, press F4 (Pulse Test).
The Pulse Test display appears:
P U L S E T E S T
R E F S (ckt references)
N O F A U L T S
e x e c
O
I
For a PLC host, line 2 shows the block’s as-
signed references and its I/O configuration.
Line 3 shows whether the block has any faults.
2. Press F1 (Execute) to pulse all outputs on the
block once. If the word FAULTS appears, it
means that one or more diagnostic errors have
occurred. Go to the Monitor/Control menu to
display the specific type of fault that has oc-
curred.
Clearing Pulse Test Faults
If you press the CLEAR key from the Pulse Test
screen, all faults on the block will be cleared.
If you press the Clear key from the
Monitor/Control screen (after displaying a specific
circuit fault), only that fault will be cleared.
Pulse Test Error Messages
If the Pulse Test cannot be performed or if the
block fails to respond, an error message appears.
Press the Clear key to remove the message.
E : P U L T S T D I S A B L E
A Pulse Test cannot be performed unless the
block’s configuration is changed.
E : I N V L D B L K T Y P E
The block does not support Pulse Tests.
E : I N V L D B L K C O N F I G
The active block is an inputs–only block.
E : P U L S E T E S T F A I L
The HHM has not received an acknowledgement
from the block within the predetermined amount
of time. Retry the test. If it continues to fail, check
the serial bus cable and active block.