Instruction manual

9. REAL & VIRTUAL MODE SWITCHING AND STOP/RESTART

9 − 4

(3) Synchronous encoder axis check

(a) The items shown in Table 9.3 below are checked to determine the

synchronous encoder status.

If an error is found, switching to the VIRTUAL mode will not occur. Error

causes can only be corrected by switching back to the REAL mode.

(b) When an error is found, the corresponding output module's error detection

signal (M2407+20n) will switch ON, and the error code will be stored in the

minor/major error code storage register.

Table 9.3 Synchronous Encoder Axis Checklist

Output Module Checked

Check

Sequence

Check Item

External

Synchronous

Encoder

Output Module

Normal

Condition

Abnormal

Condition

Not

connected

•

Is the synchronous encoder connected to

an A273EX/A172SENC unit?

! 

Connected

Cable break