99
10.3 Alarm Description Output Using PIO
So that the PLC can recognize the nature of each alarm that has generated, alarm description is output
using the ports for completed position output signals (PM1 to PM8).
Configure the system in such a way that the PLC can determine whether the output is a completed
position number or alarm description based on the ON/OFF status of the alarm output signal (*ALM).
Bit assignment table for alarm description (
z
= OFF,
{
= ON)
∗
ALM
PM8
PM4
PM2
PM1
Description: Code number in ( )
{
x x x x
Normal
z
z
{
z
{
Nonvolatile memory data write error (F7)
z
z
{
{
z
Relating to position data/parameter
• Data error at execution of bank 31 (B1)
• Data error at execution of bank 30 (B0)
z
z
{
{
{
Excitation detection error (B8)
z
{
z
z
z
Excessive actual speed (C0)
z
{
z
z
{
Relating to supply voltage
• Excessive motor supply voltage (C9)
• Excessive control supply voltage (CC)
• Drop in control supply voltage (CE)
z
{
z
{
z
Overheating (CA)
z
{
z
{
z
Deviation overflow (D8)
z
{
{
z
z
Servo error (C1)
z
{
{
z
{
Relating to encoder disconnection
• Phase-A/B disconnection detection (E8)
• Phase-A disconnection detection (E9)
• Phase-B disconnection detection (EA)
Relating to absolute specification
• ABS error 1 (ED)
• ABS error 2 (EE)
• ABS error 3 (EF)
z
{
{
{
z
CPU error (FA)
FPGA error (FB)
z
{
{
{
{
Corrupt nonvolatile memory data (F8)
