Remote I/O Communication Troubleshooting; Troubleshooting Procedure; Figure 13-20 Troubleshooting Procedure For The Pi/O Unit - Hitachi S10VE User Manual

13. Troubleshooting

13.2.3 Remote I/O communication troubleshooting

This section describes how to perform remote I/O communication troubleshooting.

13.2.3.1 Troubleshooting procedure

Use the MCS of BASE SYSTEM/S10VE (see 8.4.6.4 RAS menu: MCS) to check the status of the system
register (registered station, timeout station) and the LED status of the station module and remote I/O optical
adapter, and then perform troubleshooting.
(1) Procedure for PI/O unit troubleshooting
If the sent and received data does not match the relationship between input and output, perform
troubleshooting with respect to the PI/O modules and station modules installed in the PI/O unit.
Figure 13-20 shows the troubleshooting procedure.
The sent and received data does not match the
relationship between input and output.
The sent and received data does not
match the relationship between input
and output at one point for a particular
Among the PI/O modules installed in the
PI/O unit, the sent and received data
does not match the relationship between
input and output for one particular PI/O
module (or multiple PI/O modules).
Is the station module LED on?
Check the station module settings
(ST.No. settings, FIX/FREE settings,
and point settings).
Correct the settings (ST.No. settings, FIX/FREE
settings, and point settings).
Was recovery possible?
Finish

Figure 13-20 Troubleshooting procedure for the PI/O unit

Start
No
No
Yes
Not OK
Yes
Yes
Yes
See 13.2.4 to perform troubleshooting for the
PI/O module.
No
OK
Replace the station module.
No
See the following pages to perform remote I/O
line troubleshooting.
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