C200H α Fault diagnosis of series analog module
① The error light is on, check the N + 9 channel, and judge the error according to the error code;
② The error light and run light are not on, because the special IO unit exceeds the allowable range and IO bus error.
Fault diagnosis of CJ / CS Series analog module
① Judgment indicator light;
a. Run light and ERC light are on, Erh light is not on, check bit 00-07 and bit 14 of N + 9;
b. Run light and ERC light are on, Erh light is not on, adj light is flashing, check 12, 13, 15 of N + 9;
c. Run light is not on, ERC light is on, Erh light is not on, check the 11 bits of N + 9;
d. Run light and Erh light are on, ERC light is not on, check IO bus error, CPU unit monitoring error and CPU unit WDT error;
e. Run light and ERC light are not on, Erh light is on, check whether there are repeated unit number and special IO unit setting errors.
② Run light is on, other lights are not on, indicating that the module is normal. If there is no input and output, check the module settings.
Editor in charge: LQ