Chapter 12  Troubleshooting 
12-15 
Description  Remedy 
16#140A 
The communication with the 
extension backplane is incorrect. 
(SM9) 
1. Check whether the extension backplane is connected 
properly. 
2. Check whether the extension backplane operates 
normally, and make sure that the extension backplane 
is not affected by noise. 
16#140B 
The number of network modules 
Please decrease the number of network modules to the 
number supported by the system. 
16#140C 
The checksum of the high-speed 
data exchange is incorrect. 
Check the module firmware version and contact the local 
16#140D 
The ID of the actual power supply 
module is not the same as the ID 
of the power supply module set in 
Check whether the ID of the power supply module set in 
HWCONFIG is the same as the ID of the actual power 
supply module. 
16#140E 
The amount of data exchanged at 
a high speed exceeds the 
maximum amount supported. 
Check the module firmware version and contact the local 
authorized distributors. 
16#140F 
High-speed data exchange error 
Check the module firmware version and contact the local 
RTU IO module sending out error 
Check the installation and power of the RTU IO modules.   
16#1411 
RTU IO module sending out 
Check if the RTU IO modules function normally. 
16#1421 
Error occurs when a CPU module 
reads settings from the Intelligent 
Check the module firmware version and contact the local 
authorized distributors. 
16#1422 
Error occurs when a CPU module 
writes settings in the Intelligent 
Check the module firmware version and contact the local 
authorized distributors. 
 
12.2.4
 
BUS FAULT LED Indicator’s Blinking
 
If the BUS FAULT LED blinks, please check the operating state of the module. Please refer to sections 12.4 in 
this manual for more information about the LED indicators, and section 12.3 in this manual for more information 
about the troubleshooting for I/O modules.