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Chapter 11 Troubleshooting
This chapter is to describe various errors that may occur in system operation, their causes and actions to
take against. If any error occurs on Pnet I/F module, its related details can be checked through the
procedures below. Surely follow the troubleshooting procedures in the sequence as specified to check for
abnormal module state. And any discretionary repair or disassembly is not allowed.
11.1 Symptoms and Management by LED Status
It can know the simple symptoms by LED status and it can manage.
(When high-speed link is enabled).
(1) 2MLL-PMEA
RUN
I/F
HS
On
Blink
Off
On
Blink
On
On
Blink
Blink
On
Blink
Blink
Off
Off
Off
[Table 11.1.1] Symptoms related communication module (When High-speed link is enabled)
(2) 2MLL-PMEB/C
RUN
I/F
HS
Blink
On
Off
Blink
On
On
Blink
On
On
Blink
Blink
On
-
-
-
Off
Off
Off
[Table11.1.2] Symptoms related communication module (When High-speed link is enabled)
1
Pnet I/F Module 2MLL-PSRA, 2MLL-PMEA, 2MLL-PMEB User's Guide
P-RUN
STAT
ERR
Blink
On
Off
On
On
On
Blink
On
Off
Blink
Off
On
-
-
-
P-RUN STAT
ERR
On
Off
Off
Blink
On
Off
On
Off
On
-
-
Off
-
On
-
-
-
-
Honeywell
Symptoms
High-speed link
disabled
Abnormal connection
status of a slave
Change setting of
SyCon when High-
speed link enabled
Abnormal connection
of all slave
Serious fault occurred
CFG
Symptoms
High-speed link disabled
Off
Abnormal connection
Off
status of a slave
Off
Bus error
Configuration setting
Blink
changes during High
Speed Link operation
-
Error in OS
Error
Chapter 11 Troubleshooting
Management
-
Check the connection of slave
Check the setting of slave
-
Check the connection of slave
Check the setting of slave
Ask to Customer service
center
Management
-
Check the connection of
slave
Check the setting of
slave
Check the cable short
Check the module with
different speed
Check the connection of
slave
Check the setting of slave
Request A/S
Request A/S
January 2019
R220
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