
B–63445EN/01
7. TROUBLESHOOTING
159
An error is generated in communication with serial pulse coder.
Check the details by the diagnostic function of the Power Mate.
#7 #6 #5 #4 #3 #2 #1 #0
0203 DTE CRC STBDGN
#7(DTE) Data error has generated.
#6(CRC) Serial communication error has generated. (CRC check error)
#5(STB) Serial communication error has generated. (Stop bit error)
1) #7(DTE):Response from serial pulse coder is absent.
1 Signal cable is disconnected
2 Serial pulse coder is faulty. å See Caution 1.
3 +5V to the serial pulse coder is lowered.
2) #6(CRC),#5(STB):Serial communication is in faulty
1 Signal cable is disconnected.
2 Serial pulse coder is faulty å See Caution 1.
3 Base PCB is faulty å See Caution 2
CAUTION
1 After the serial pulse coder is changed, reference position
or machine’s standard point is different from the one before
replacement. Therefore reset and adjust it again.
2 All the data stored in memory is lost when the base printed
board is changed. Set NC data again, referring to “chapter
3 data input/output”.
The data includes reference position information.
Reference position setting must also be performed,
therefore.
7.13
ALARM 351 (SERIAL
PULSE CODER
COMMUNICATION
IS ABNORMAL)
Points
Causes