R88A-CAU015S Omron, R88A-CAU015S Datasheet - Page 295

• Manufacturer Part Number: R88A-CAU015S
• Description: POWER CABLE 15M
• Manufacturer: Omron

Specifications of R88A-CAU015S

• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

CompoBus/S Specifications
6-1
The CompoBus/S is configured as shown in the following diagram.
Masters
Slaves
Main and Branch Lines
Cable
Connection Method
Termination Resistance
6-2
The Master controls the CompoBus/S and manages the external I/O for each of the Slaves. There is
only one Master per CompoBus/S System. The Master must be connected at the end of the main
line as shown in the above diagram.
Slaves process external I/O by communicating with the CompoBus/S and Master.
The main line is the cable that connects the furthest separated terminals. Branch lines are the
cables that branch out from the main line.
With the CompoBus/S, either special flat cable or VCTF cable can be used for communications.
When flat cable is used, the communications power supply can be provided from the CompoBus/S
cable. The configuration example in the above diagram uses flat cable. When VCTF cable is used,
the power supply must be provided to the Slaves through a separate cable. (A communications
power supply is not required for the FND-X.)
The CompoBus/S has two methods for connecting Slaves: the T-branch method and the multi-drop
method. With the T-branch method, Slaves are connected to branch lines that branch off from the
main line. With the multi-drop method, Slaves are connected directly to the main line.
In order to stabilize communications, it is necessary to install terminating resistance at the opposite
end of the main line from the Master. There are two types of terminating resistance: the connector
type with special flat cable, and the terminal block type.
CompoBus/S Configuration Requirements
Communications
power supply
Master
Special flat cable
Slave
Slave
Slave Slave Slave
Main line
Branch line
Power supply cable
Slave
T: T-branch method
M: Multi-drop method
Terminating
resistance
Chapter 6