CJ-series CompoBus/S Master Unit
last update: August 21, 2013
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. |
I/O points | 256 (128 inputs and 128 outputs) or 128 (64 inputs and 64 outputs) (Switch-
selectable) |
---|---|
Applicable PLC models | CJ-series PLCs |
Unit type | Special I/O Unit |
Allocated words * | For 256 I/O: 20 words (8 for inputs, 8 for outputs, 4 for status)
For 128 I/O: 10 words (4 for inputs, 4 for outputs, 2 for status) |
No. of mountable Master Units | 40 |
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).
last update: August 21, 2013