IAI America SCON-C - Manual (Page 227)

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Appendix
5.3 Alarm Description Output Using PIO
In PIO patterns 0 to 3 corresponding to the positioner mode (64 to 512-point positioning types), alarm
information can be output using the ports for completed position output signals (four bits of PM1 to PM8) so that
when an alarm occurs, the nature of the alarm can also be identified on the PLC side.
Program the PLC so that whether a given output is a completed position number or alarm can be identified
based on the status of the alarm output signal (*ALM).
In the pulse-train input mode, alarm information can be output using the ports for alarm code output signals
(ALM1, ALM2, ALM4 and ALM8) so that when an alarm occurs, the nature of the alarm can be identified on the
PLC side.
Bit assignment table for alarm description (
 = OFF,  = ON)
Positioner mode, PIO = 0 to 3
ALM
PM8 PM4 PM2 PM1
Pulse-train input mode
ALM ALM8 ALM4 ALM2 ALM1
Description: Code number in ( )
 x x x x Normal
     Software reset during servo ON (090)
Position number error during teaching (091)
PWRT signal detected during movement (092)
PWRT signal detected before completion of home return (093)
     Move command during servo OFF (080)
Absolute position move command before completion of home
return (083)
Move command during home return (084)
Position number error during movement (085)
Position command data error (0A3)
Deceleration command error (0A7)
     PCB mismatch error (0F4)
    
Parameter data error (0A1)
Position data error (0A2)
Unsupported motor/encoder types (0A8)
     Phase Z position error (0B5)
Magnetic pole not confirmed (0B7)
Home sensor not detected (0BA)
Home return timeout (0BE)
Creep sensor not detected (0BF)
     Excessive actual speed (0C0)
Overrun detected (0C2)
     Electromagnetic brake not released (0A5)
Dynamic brake not released (0A6)
Overcurrent (0C8)
Overheating (0CA)
Current-sensor offset adjustment error (0CB)
Emergency stop relay fused (0CD)
Control power-supply voltage low (0CE)
24-V I/O power-supply error (0CF)