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Chapter 11 Troubleshooting
8
Pnet I/F Module 2MLL-PSRA, 2MLL-PMEA, 2MLL-PMEB User
’s Guide
R220
Honeywell
January 2019
11.4 Troubleshooting
11.4.1 SyCon abnormal connection
Is the serial port setting correctly?
Is the serial port used
in other program?
Is Power supplied to module?
Is the module lockup on module?
Is there a problem in Serial cable?
Is the environment appropriate with
standard specifications?
SyCon abnormal connection
Set the port of serial cable
connected with communication module.
Close the serial port in other program.
Connect the SyCon again.
Apply Power in module.
Install the module on slot correctly.
Check the serial cable.
Operate in environment prescribed
st standard specifications.
Yes
No
Yes
No
Yes
No
No
Yes
Yes
No
No