Manual

Troubleshooting
Chapter 10
109
Figure
10.5 T roubleshooting Flowchart (continued)
Hardware
?
Block
?
Is second
?
Processor
RUN
indicator
?
Program
Bits 12, 11,
?
?
Check module address
YES
NO
YES
YES
NO
NO
YES
NO
NO
YES
A
11068 OS
B
stop indicator
on
transfer DONE
bits toggling
in block transfer
instructions
Display status
block on
industrial terminal
status word a legal
address
Check parameter
block address
pointer words
(2 through 5)
error or parameter
out of range
10 in 2nd status
word = 000
Bits 12, 11,
?
10 in 2nd status
word = 111
YES
NO
Check parameter
block values
Error in move set
Perform a
manual jog
YES
Jogs
?
o.k.
Check command
block for illegal
bit combinations
NO
block with i.d.
indicated by value
of bits 12, 11, and 10.
9
1. Reset 1771ES expander
wiring arms.
2. Check hardware stop
circuit
3. Issue Reset command via
command block
4. Cycle power at I/O chassis
55
1. Check for active stop
commands.
2. Recheck for errors
in status block
3. Cycle 1771ES
expander power
4. Check for active stop
commands in motion
control block
5. Check encoder and
encoder wiring.
Ensure that axis
integration has been
performed correctly.
4
6
7
8