Chapter 6 - GP RUN Mode and Errors
GP-377 Series Users Manual
6-7
YES
NO
Disconnect all the cables except the
power cable and turn the unit ON
.
Setup the protocol that corresponds
with the connected PLC.
PLC Connection
Manual
(included with the screen
creation software)
For
RS-422
, use the solutions pro-
vided in the dotted rectangle, above.
Install the Termination Resistor in the
correct position with the correct values.
Resistor position and values change
with each PLC type. When using the
Direct Access format,
PLC Connection
Manual
(included with the screen
creation software)
Does not communicate
Is the Termination Resis-
tor correctly installed?
When the GP will not communicate with the host PLC, follow the flowchart
below to find both the cause of the problem and a suitable response.
Or, if an error message displays on the screen, check the error code (refer to the
Error Messages
section in this chapter) to find the appropriate solution.
6.2.3 No GP/Host Communication
Unplug the GP's power cord
Has the correct PLC
protocol (Table file)
been selected?
Is the SIO cable attached
properly to this unit?
NO
YES
NO
YES
Attach the SIO cable unit properly,
making sure all connections are secure.
PLC Connection
Manual
(included with the screen
creation software)
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