Yaskawa MP940 - Manual (Page 151)

MP940 Functions
4.6.2 I/O Communications Function
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„ MP940D Wiring Example
4.6.2 I/O Communications Function
I/O communications exchange I/O data between the MP940D and the DeviceNet over the
communications path via DeviceNet I/O connections. I/O registers for I/O communications
are allocated in the controller CPU using the CP-717.
4.6.3 Communications Specifications
The following table shows the basic MP940D specifications by Interface Module.
260IF MP920
I/O
PS
PS
I/O
PS
FG
MP940
D
SGDH
Master mode
Internal I/O power supply
External I/O power
supply
Slave mode
121- Ω terminator 121- Ω
terminator
Main cable
Branch cable
External I/O power supply line
Internal I/O power supply line
Communications power supply line
Communica-
tions power
supply tap
(with reverse
current pre-
vention for
multiple
power sup-
plies)
Communica-
tions power
supply
Item Specification
Name MP940D
Model Number JEPMC-MC410
Number of circuits 1
Compatible Communications I/O communications function (conforming to
DeviceNet)
I/O Communica-
tions Maximum Number of Slaves 63 nodes
Maximum Number of I/O
Bytes 2,048 bytes with 256 bytes per node
Setting Locations 2 Rotary Switches on Side of
Module Node address
DIP Switch on Side of Module Baud rate and master/slave setting
Indicators 2 LED indicators: MS and NS
Communications Power Supply Voltage 24 VDC ±10% (supplied by special cable)