Yaskawa MP940 - Manual (Page 154)

4.6 DeviceNet Functions
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Parameter Settings
The following items are set in the Transmission Parameter Tab Page of the 260IF Configura-
tion Window.
• Communications Cycle Time Information
Refer to 4.2 Calculating Communications Cycle Times in MP920 User’s Manual 260IF
DeviceNet (SIEZ-C887-5.2).
• I/O Allocations
The asterisks (**) displayed on the left in the I/O allocations table indicate the 260IF
allocations in the Module Configuration Window.
Setting Contents
Communications Cycle
Time (set value) Enter the communications cycle time set value when using
the 260IF as a DeviceNet Master.
Communications Cycle
Time (current value)
display only Open during I/O communications to display the current value
of the communications cycle.
Communications Cycle
Time (max. value)
display only Open during I/O communications to display the maximum
value for the communications cycle.
Setting Contents
Master/Slave Set the operating mode (DeviceNet Master/Slave) for the 260IF Module.
Set the same value as that set on SW1 (X1) on the 260IF Module.
MAC ID The DeviceNet MAC ID (DeviceNet address) for the 260IF Module. Set
the same value as that set on SW2 and SW3 on the 260IF Module.
MAC ID (column) The DeviceNet MAC ID (DeviceNet address) for I/O allocations. It is
automatically allocated in order starting from 00.
D Determines whether or not the Controller CPU exchanges I/O data with
the 260IF. Turn ON (check) this setting if the data is not to be exchanged.
INPUT Sets the leading word address of the input area for the corresponding
device input data (input register IWxxxx). Specify a hexadecimal
address.
BSIZE Sets the size of the output area for the corresponding device (input regis-
ter IWxxxx) in number of bytes. Specify a number of bytes between 1
and 256 (decimal) for each Slave.
For example, if the setting is 3 bytes from IW1100 and one byte from
IW1102, the register area shown in the following diagram will be allo-
cated.
Register No. F.…..8 7..….0
IW1100H
IW1101H
IW1102H
IW1103H
D Sets whether or not the Controller CPU will exchange I/O data with the
260IF. Turn ON (check) this setting if the I/O data is not to be exchanged.
OUTPUT Shows the first word address of the output area (output register OWxxxx)
allocated to the corresponding device. Specify a hexadecimal address.