Mitsubishi MELESEC-ST User Manual page 154

APPENDICES
Error Information
Er.n+1 Er.n
External power supply 24VDC
0 1
voltage low
0 0 Normal
Error Information
Er.n+1 Er.n
0 1 AUX. input 24VDC voltage low
0 0 Normal
Module Status
Mr.n
0
Module Status
1
App - 13
(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
Item
2) Power feeding module
Item
(c) Mr Module Status Area
The Module Status Area will be explained.
Item
(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.
(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.
The 24VDC voltages input from the SYS. input and AUX.
input to the power distribution module are within the rated
range.
The 24VDC voltage input from the AUX. input to the power
distribution module is low.
The 24VDC voltage input from the AUX. input to the power
distribution is within the rated range.
Hardware fault
Normal
MELSEC-ST
Description
Description
Description
App - 13