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1-3 CompoBus/D System Configuration
1-3-1 System Configuration
CompoBus/D is a multi-bit, multi-vendor network that combines controls and data on a machine/line-
control level and that conforms to DeviceNet open field network specifications.
Two types of communications are supported: 1) Remote I/O communications that automatically trans-
fer I/O between Slaves and the CPU Unit of a SYSMAC PC without any special programming in the CPU
Unit and 2) Message communications are performed between a CPU Unit to which a Master Unit is
mounted and Slaves by executing specific instructions (such as CMND and IOWR, depending on the
model of SYSMAC PC used) from the program in the CPU Unit.
A Configurator (sold separately) can be used to enable following. This allows the support of an even
larger control system.
S I/O area words can be flexibly allocated for remote I/O communications.
S More than one Master Unit can be mounted to a single PC.
S More than one Master Unit can be connected in a single Network.
H Fixed Allocation: Configuration without a Configurator
Slave
Slave
Slave
Slave
3G3FV-PDRT1-SIN
CompoBus/D Communications Card
SYSDRIVE 3G3FV
Inverter
C200HW-DRM21-V1 or CVM1-DRM21-V1
CompoBus/D Master Unit
CV-series PCs: 64 nodes max. (including the Master Unit)
C200HX/HG/HE PCs: 64 nodes max. (including the Master Unit)
C200HS PCs: 33 nodes max. (including the Master Unit)
Note 1. The Master Unit occupies one node of the CompoBus/D Network.
Note 2. If C200HS PCs are used, only remote I/O communications are possible.
Note 3. If one node uses more than one word, the maximum number of nodes will be reduced by one
node for each extra word that is used.
Functions and System Configuration Chapter 1