Yaskawa SMC–4000 - Manual (Page 172)

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SMC–4000 User Manual
MW (Modbus Wait)
[Configuration]
DESCRIPTION:
The MW command sets the controller to wait for the ACK signal from a remote I/O device before going to
the next command. With this setting disabled, the controller will continue executing commands after an I/O
command that requires it to send a modbus packet. In this mode, the I/O state cannot be guaranteed.
Enabling this setting is the default, and is recommended. This is a configuration command and only needs to
be set once in the program. This configuration is not burnable, and is set to “enabled” at power up.
ARGUMENTS: MW n where
n is 0 to disable the Modbus Wait function.
n is 1 to enable the Modbus Wait function.
USAGE:
OPERAND USAGE:
_MW contains the contains current setting of the MW command.
RELATED COMMANDS:
CB (Clear Bit)
MB (Modbus)
SB (Set Bit)
EXAMPLES:
Typically this command would be set once at the top of the application program.
While Moving Yes Minimum Value 0
In a Program Yes Maximum Value 1
Command Line Yes Default Value 0
Can be Interrogated Yes
Used as an Operand Yes
MW1 Enable Modbus Wait function.