App - 13 App - 13
APPENDICES
MELSEC-ST
(b) Er Error Information Area
The Er Error Information Areas of the bus refreshing module and power
feeding module will be explained.
1) Bus refreshing module
Error Information
Er.n+1
Er.n
Item Description
0 1
External power supply 24VDC
voltage low
(1) The 24VDC voltages input from the SYS. input and AUX.
input to the power distribution module are low.
(2) The 24VDC voltage input from the SYS. input to the
power distribution module is low.
(3) The 24VDC voltage input from the AUX. input to the
power distribution module is low.
0 0
Normal
The 24VDC voltages input from the SYS. input and AUX.
input to the power distribution module are within the rated
range.
2) Power feeding module
Error Information
Er.n+1
Er.n
Item Description
0
1
AUX. input 24VDC voltage low
The 24VDC voltage input from the AUX. input to the power
distribution module is low.
0 0
Normal
The 24VDC voltage input from the AUX. input to the power
distribution is within the rated range.
(c) Mr Module Status Area
The Module Status Area will be explained.
Module Status
Mr.n
Item Description
0 Hardware
fault
1
Module Status
Normal
(d) Wr Word Input Area
The Word Input Area is not occupied.
(2) Output Data
(a) Bw Bit Output Area
Two points of Bw.n and Bw,n+1 are occupied.
Since it is not used by the power distribution module, write 0 (fixed) to this
area.
Summary of Contents for MELESEC-ST
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Page 23: ...A 21 A 21 MEMO...
Page 114: ...10 22 10 22 10 MOUNTING AND INSTALLATION MELSEC ST MEMO...
Page 125: ...11 11 11 11 11 EMC AND LOW VOLTAGE DIRECTIVE MELSEC ST MEMO...
Page 163: ...Index 2 Index 2 MEMO Ind...
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