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Industrial Automation

Industrial Automation

Discontinued On Aug. 2022

CS1W-SRM21

CS-series CompoBus/S Master Unit

CS1W-SRM21

CompoBus/S is a high-speed I/O bus

* Information in this page is a reference that you created on the basis of information in the product catalog before the end of production, may be different from the current situation, such as goods for / supported standards options / price / features of the product. Before using, please check the compatibility and safety system.

Communication Specifications

Item Specification
Communications method Special CompoBus/S protocol
Communications baud rate High-speed Communications Mode: 750 kbps
Long-distance Communications Mode: 93.75 kbps
Modulation method Baseband method
Coding method Manchester coding method
Error control checks Manchester code check, frame length check, and parity check
Cable VCTF cable
(JIS C 3306)
Two 0.75 mm2 conductors (2 signal wires)
Four 0.75 mm2 conductors (2 signal wires and 2 power supply wires)
Special Flat
Cable
Four 0.75 mm2 conductors (2 signal wires and 2 power supply wires)
Commu-
nications
distance
2-conductor
VCTF cable
High-speed Communications Mode
Main line length: 100 m max.
Branch line length: 3 m max.
Total branch line length: 50 m max.
Long-distance Communications Mode
Main line length: 500 m max.
Branch line length: 6 m max.
Total branch line length: 120 m max.
4-conductor
VCTF cable
High-speed Communications Mode
Main line length: 30 m max.
Branch line length: 3 m max.
Total branch line length: 30 m max.
Long-distance Communications Mode: Flexibly branched, provided that the total length
of cable is a maximum of 200 m.
Special Flat
Cable
High-speed Communications Mode
Main line length: 30 m max.
Branch line length: 3 m max.
Total branch line length: 30 m max.
When 4-conductor VCTF cable or Special Flat Cable is used to connect fewer than 16
Slaves, the main line can be up to 100 m long and the total branch line length can be up
to 50 m in High-speed Communications Mode.
Long-distance Communications Mode: Flexibly branched, provided that the total length
of cable is a maximum of 200 m.

Specifications

Applicable PLC models CS-series PLCs
Unit type CS1 Special I/O Unit
Internal current consumption 5 VDC, 150 mA max.
Weight 167g max.
I/O points 256 (128 inputs and 128 outputs) 128 (64 inputs and 64 outputs)
Allocated words * 20 words
(8 for inputs, 8 for outputs, 4 for status)
10 words
(4 for inputs, 4 for outputs, 2 for status)
No. of mountable Master Units 95 96
Node address 8 addresses per node
No. of connectable Slaves 32
Status information Communications Error Flags, Participation Flags

* Uses Special I/O Unit Area (in CIO Area).