Yaskawa MP900 Series Machine Controller New Ladder Editor - Manual (Page 24)

1 Ladder Program Instructions
1.1.9 COIL Instruction (COIL)
1-14
Register status of Falling pulse instruction is shown in Table 1.2.
Note: Case of Program Example, the instruction is used not for fall detec-
tion of MB000100 but is used for fall detection of IB00001.
MB000100 is used only for storing the previous value of IB00001.
1.1.9 COIL Instruction (COIL)
„ Outline
The COIL sets the value of the referenced register to 1 (ON) when the immediately-preced-
ing value of the bit input is ON, and to 0 (OFF) when the immediately-preceding value of
the bit input is OFF.
„ Format
„ Parameter
Table 1.2 Register Status with Falling Pulse Instruction
Input Result
IB00001 MB000100
(Previous value of
IB00001)
MB000100
(IB00001 stored)
MB000101
OFF OFF OFF OFF
OFF ON OFF ON
ON OFF ON OFF
ON ON ON OFF
Parameter Name Setting
Coil No. • Any bit type register (except for # and C register)
• Any bit type register with subscript (except # and C registers)
Symbol: COIL
Full Name: Coil
Category: RELAY
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