Eaton ELC-PB, Programming Manual

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EL C Pro g rammi ng Manu al
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2.18 Applications of Special M Relay and Special D Register
Function Group ELC Operation Flag
Number M1000~M1003
Contents:
These relays provide information about the ELC when switched to run mode.
M1000:
Always ON when in run mode.
M1000
Y0
ELC is running
always ON
M1000 is On contact
during operation
M1001:
Always OFF when in run mode.
M1002:
ON for the first scan when the ELC starts then OFF the rest of the time during run mode. Use to
initialize registers, ouptuts, counters, etc. when first entering run mode.
M1003:
OFF for the first scan when the ELC starts, then ON the rest of the time during run mode. Use to
initialize registers, ouptuts, counters, etc when first entering run mode.
ELC RUN
M1000
M1001
M1002
M1003
scan time
Function Group Monitor Timer
Number D1000
Contents:
1. Monitor timer is used for monitoring the ELC scan time. When the scan time exceeds the set
value (SV) in the monitor timer, the ELC ERROR LED will be ON and all outputs will be “OFF”.
2. The default in the monitor timer is 200ms. If the program is long or the operation is too
complicated, MOV instruction can be used to modify SV. See the example below for SV =
300ms.